WO2017077059A1 - Halbleiterlaser und verfahren zum herstellen eines halbleiterlasers sowie wafer - Google Patents
Halbleiterlaser und verfahren zum herstellen eines halbleiterlasers sowie wafer Download PDFInfo
- Publication number
- WO2017077059A1 WO2017077059A1 PCT/EP2016/076705 EP2016076705W WO2017077059A1 WO 2017077059 A1 WO2017077059 A1 WO 2017077059A1 EP 2016076705 W EP2016076705 W EP 2016076705W WO 2017077059 A1 WO2017077059 A1 WO 2017077059A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ridge waveguide
- semiconductor layer
- layer sequence
- longitudinal axis
- width
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/0201—Separation of the wafer into individual elements, e.g. by dicing, cleaving, etching or directly during growth
- H01S5/0202—Cleaving
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0233—Mounting configuration of laser chips
- H01S5/0234—Up-side down mountings, e.g. Flip-chip, epi-side down mountings or junction down mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/024—Arrangements for thermal management
- H01S5/02461—Structure or details of the laser chip to manipulate the heat flow, e.g. passive layers in the chip with a low heat conductivity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/22—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0425—Electrodes, e.g. characterised by the structure
- H01S5/04252—Electrodes, e.g. characterised by the structure characterised by the material
Definitions
- the invention relates to a semiconductor laser and to a method for producing a semiconductor laser.
- the invention further relates to a wafer.
- the object of the invention is further to be seen in providing an improved method for producing a semiconductor laser.
- the object of the invention is also to be seen in providing an improved wafer.
- a semiconductor laser comprising: a semiconductor layer sequence with two facets facing one another defining a resonator and an active zone formed between the two facets,
- ridge waveguide which is formed from the semiconductor layer sequence as a temperature above the active zone bringing an upper surface of the semiconductor layer sequence and out ⁇ oriented with its longitudinal axis along the active zone
- the upper side of the semiconductor layer sequence comprises a section which is relative to a longitudinal axis of the
- the section comprises a Unterab ⁇ section of the upper side of the ridge waveguide, where ⁇ in the subsection related to the longitudinal axis of the ridge waveguide over a width of the ridge waveguide ⁇ ter on one of the two facets adjacent extends
- a method of manufacturing a semiconductor laser comprising the following ⁇ the steps of:
- the semiconductor layer sequence comprises a ridge waveguide, which as a full- ⁇ forms the semiconductor layer sequence overlying the active region Erhe ⁇ bung an upper surface of the semiconductor layer sequence and is aligned with its longitudinal axis along the active zone, wherein a Contact metallization is applied on a side facing away from the active zone top of Stegwel ⁇ lenleiters,
- the upper surface of the semiconductor layer sequence comprises a From ⁇ section which is adjacent with respect to a longitudinal axis of the ridge waveguide across its width at one of the break lines, wherein the portion comprises at least egg ⁇ NEN lower portion of the top of the ridge waveguide, with the sub-section relative to the
- Longitudinal axis of the ridge waveguide extends over a width of the ridge waveguide adjacent to the one of the two fault lines, wherein the portion is free of the Bestromungstik,
- umfas ⁇ send a wafer is provided umfas ⁇ send:
- the semiconductor layer sequence comprises a ridge waveguide, which is formed from the semiconductor layer sequence as a temperature above the active zone bringing an upper surface of the semiconductor layer sequence and is aligned with its longitudinal axis along the active zone where ⁇ at a contact metallization is applied on an upper side of the ridge waveguide facing away from the active zone,
- the top of the semiconductor layer sequence comprises a portion which, relative to a longitudinal axis of the ridge waveguide over its width at one of the two Fracture lines adjacent, wherein the portion at least ei ⁇ nen subsection of the upper side of the ridge waveguide, wherein the subsection extends relative to the longitudinal axis of the ridge waveguide over a width of the ridge waveguide adjacent to the one of the two fault lines, the portion free of the
- Energizing layer is.
- the invention includes, in particular, and among other things, the idea of providing on the upper side of the ridge waveguide a region (or two regions) immediately adjacent to one of the two rupture lines (or adjoining one of the two rupture lines), which (or which) is (are) free of the energizing layer.
- an improved fracture behavior along the fracture line is advantageously effected.
- the technical advantage, in particular is achieved that improved break quality can be achieved.
- it can be avoided in an advantageous manner that possible material residues of the energizing layer are located in the active region of the facet after breaking. This is particularly the case because a local stress in the region of the fault lines along which the facets have formed after breaking is positively influenced for splitting or breaking.
- the technical advantage that the facets have as smooth a surface as possible, in particular an atomically smooth surface, without exhibiting disturbances, such as, for example, crystal dislocations, can advantageously be brought about.
- a good threshold current can be achieved in an advantageous manner.
- low operating currents, high efficiencies and a long service life can be achieved.
- the fact that the stray layer is in direct contact with the contact metallization means, in particular, that there is no further layer between the stray layer and the contact metallization.
- the Bestromungs Mrs be ⁇ thus stirs the contact metallization, for example, directly, ie directly.
- located between the contact metallization and the Bestromungstik no thermally conductive further layer, which may for example be provided to a heat that is generated during operation of the semi-conductor laser ⁇ dissipate.
- the portion of the upper surface of the semiconductor layer sequence, which is free from the Bestromungstik is provided by an exporting ⁇ approximate shape with the contact metallization. That means in particular that the Beneficime ⁇ metallization is applied or formed on this portion, the con- taktmetallmaschine within this section is free of the Bestromungstik.
- the contact metallization has a region that is free of the energization layer.
- the region corresponds to the above-described section of the upper side of the semiconductor layer sequence , respectively, and comprises the abovementioned section of the upper side of the semiconductor layer sequence .
- a ridge waveguide in the sense of the present invention can also be referred to as a ridge.
- a ridge waveguide advantageously effects efficient guidance of radiation in the direction parallel to a main extension direction of the semiconductor layer sequence.
- the term waveguide refers to a waveguide in the direction parallel to the main extension direction.
- the ridge waveguide is formed or formed from the semiconductor layer sequence. There is thus formed the waveguide as egg ⁇ ne survey remaining regions of the semiconductor layer sequence, in the direction parallel to a growth direction ⁇ the semiconductor layer sequence.
- the waveguide ridge waveguide
- Beidsei ⁇ tig of the ridge waveguide is a material of the semiconductor layer sequence removed.
- the ridge waveguide extends along an emission direction and / or a resonator longitudinal direction of the semiconductor laser.
- bridge respectively waveguide can be as "Ridge Waveguide” or simply as “Ridge” be ⁇ draws such a ridge waveguide.
- the semiconductor laser is formed as a ridge laser.
- a resonator length is defined for example by acting as a resonator mirror facets and is playing at ⁇ aligned perpendicular to the facets.
- the semiconductor laser comprises a contact metallization.
- the contact metallization is located on an upper side of the waveguide facing away from the active zone.
- the contact metallization contacts an upper surface of the semiconductor material of the shaping half ⁇ semiconductor layer sequence.
- the contact metallization is preferably formed or formed from a metal or a metal alloy.
- the contact metallization formed from a semiconductor material is respectively comprises one such having a entspre ⁇ sponding doping metallic properties or substantially metallic properties.
- the contact metallization is formed from or comprises one or more of the following materials: Pd, Ti, Pt, Ni, ZnO: Al, ZnO: Al, ZnO: Ga, ITO, Rh (rhodium) ,
- the ride work of the oxide materials listed, for example, by a corresponding doping is ⁇ provides.
- the semiconductor laser has an energizing layer.
- the energizing layer is in direct contact with the contact metallization.
- the Bestromungstik is set up or designed to electrically connect the Kon ⁇ tact metallization.
- the Bestromungstik is purchasedbil ⁇ det as a conductor track structure.
- the energizing layer is formed, for example, as a bonding pad.
- the Bestromungstik can be formed for example as ei ⁇ ne Bondpadmetallmaschine.
- the Bestromungs ⁇ layer extends, for example, at least partially over the top of the waveguide seen in plan view.
- the energizing layer comprises ei ⁇ nes of the following materials or consists of one or more of the following materials: Au, Ni, Ti, ZnO: Al, ZnO: Ga, ITO, Pt.
- the energizing layer is preferably formed from Au or from Ti or from Ti-Pt-Au. It is provided, for example, that the energizing layer is formed or formed from a plurality of individual layers of different materials. In this case, it is provided, for example, that layers of the current-carrying layer which are not in direct contact with the upper side of the semiconductor layer sequence or of the ridge waveguide are formed from materials other than the materials mentioned.
- the upper waveguide is also side of the ridge waveguide part of the top of the semi ⁇ conductor layer sequence.
- the Formu ⁇ -regulation "top side of the semiconductor layer sequence" the top of the ridge waveguide.
- the semiconductor layer sequence is based in particular on a III-V compound semiconductor material.
- the semiconductor Mate ⁇ rial is, for example, be a nitride compound semiconductor material such as Al n I Ni n - m Ga m N or a phosphide compound semiconductor material such as Al n I ni n _ m Ga m P or an arsenide Compound semiconductor material such as Al n i ni-nm Ga m As, where each 0 _i n _i 1, 0 _! m _ £ 1 and n + m _ £ 1.
- the semiconductor layer sequence and additional doping materials for example, inventory ⁇ parts.
- the semiconductor layer sequence comprises, for example, one or more active zones.
- An active zone includes, for example, a single quantum well structure or, for example, a multiple quantum well structure.
- an electromagnetic ⁇ diagram radiation is generated in the active region, for example in the spectral range of between 300 nm and 1500 nm, for example comprised between 380 nm and 600 nm.
- the radiation generated in the intended use of the semiconductor laser a coherent laser radiation.
- the semiconductor laser is designed as an edge-emitting semiconductor laser. According to one embodiment it is provided that the semiconductor laser is manufactured by the method for fabricating a semiconductor laser ⁇ respectively is. According to one embodiment, it is provided that the semiconductor laser is produced using the wafer.
- Breaking in the sense of the present invention comprises, in particular, splitting.
- the wording "respectively” includes the Formu ⁇ -regulation "and / or”.
- the width of the section with respect to the longitudinal axis of the ridge waveguide ⁇ ters between 30 ym and 80 ym, in particular between 35 ym and 55 ym, is.
- a length of the section relative to the longitudinal axis of the Stegwel ⁇ lenleiters between 5 .mu.m and 50 .mu.m, in particular between 10 and 20 ym ym, is.
- the section is partially bounded by one or more energization layer sections of the energization layer.
- a respective width of the at least one further current-carrying layer be ⁇ to the longitudinal axis of the ridge waveguide between 10 ym and 40 ym, in particular between 20 ym and 30 ym, is.
- a plurality of further energizing layers are provided. Versions that can be given in conjunction with another Bestromungstik, apply equally to men ⁇ tersfor comprising a plurality of further Bestromungstiken and vice versa ⁇ . Another Bestromungstik is not placed listed on the ridge waveguide after exporting ⁇ approximate shape, for example. That is, according to one embodiment, the wide ⁇ re Bestromungstik is applied to an area of the upper surface of the semiconductor layer sequence which is different from the top of the ridge waveguide. A facet in the sense of the present invention can also be referred to as a laser facet.
- the terms length and width relate relative to the longitudinal axis of the ridge waveguide.
- the width thus indicates a direction transverse to the longitudinal axis.
- the length thus extends longitudinally, ie parallel to the longitudinal axis.
- the longitudinal axis of the ridge waveguide is the axis of the ridge waveguide, which runs along its largest extent. For example, the longitudinal axis is perpendicular to the two facets.
- Embodiments relating to one of the two facets apply analogously to the other of the two facets.
- a corresponding section comprising a corresponding subsection is provided, the corresponding subsection being free of the energizing layer. The same applies to the fault lines.
- a profile of a contour respectively of the passivation layer, respectively, of the contact corresponding to partially or completely of a contour of the Bestromungstik respectively entspre ⁇ chen.
- a profile or a contour of the passivation layer or the contact metallization is different from a contour of the current application layer.
- 1 is a frontal sectional view of a first semiconductor laser ⁇ head
- 2 is a plan view of the first semiconductor laser of Fig. 1
- 3 is a plan view of a second semiconductor laser
- FIG. 4 is an enlarged detail of the plan view of the second semiconductor laser of Fig. 3,
- FIG. 6 is a plan view of a fourth semiconductor laser
- FIG. 7 is a plan view of a fifth semiconductor laser
- FIG. 8 is a plan view of a sixth semiconductor laser
- Fig. 9 is a plan view of a seventh Halbleiterla ⁇ ser
- Fig. 10 is a plan view of a wafer
- FIG. 11 shows a flowchart of a method of manufacturing a semiconductor laser.
- FIG. 1 shows a frontal sectional view of a first semiconductor laser 101.
- Fig. 1 shows a view of a facet 107 of the semi-conductor laser 101.
- ⁇ facets may be referred to for the purposes of the present invention as laser facets.
- the semiconductor laser 101 comprises a semiconductor layer ten Anlagen 103.
- the semiconductor layer sequence 103 comprises an active region 105.
- the active region 105 is configured to generate elekt ⁇ romagnetischer radiation.
- a Stegwellenlei ⁇ ter 109 is formed in the form of a survey.
- the ridge waveguide 109 is formed or formed from the semiconductor layer sequence 103 as an elevation of an upper side 111 of the semiconductor layer sequence 103 lying above the active zone 105.
- the ridge waveguide 109 is aligned with its longitudinal axis (not shown in FIG. 1) along the active zone 105.
- the two facets define a resonator, with the active zone 105 between the two facets.
- the two facets are formed due to breakage of the semiconductor layer sequence 103 along break lines in a method of manufacturing a semiconductor laser.
- the ridge waveguide 109 has an upper side 113, which faces away from the active zone 105. Since the Stegwellenlei ⁇ ter is formed from the top 111 of the Halbleiter Anlagenenfol ⁇ ge 103,109, thus also the top 113 of the ridge waveguide 109 of the top 111 of the semiconductor layer sequence ⁇ 103rd
- the ridge waveguide 109 has an upper side 113, which is oriented parallel to the active zone 105. Lateral Be ⁇ boundary surfaces of the ridge waveguide 109 are formed by flanks 115. The flanks 115 are oriented perpendicular to the active zone 105. Perpendicular to the plane, the Stegwel ⁇ lenleiter 109 to a main extension direction which corresponds to its longitudinal axis. By the two facets defi ned ⁇ or fixed resonator of the semiconductor laser 101 is also oriented perpendicular to the plane of the drawing. In the In accordance with the mode of operation, the semiconductor laser 101 emits laser radiation within the semiconductor layer sequence 103 perpendicular to the plane of the drawing. A forming in the intended operation the laser mode is graphically as a thickening of the active region 105 shown below the Stegwellenlei ⁇ ters 109 and provided with the reference numeral 117th
- the regions of the semiconductor layer sequence 103 adjacent the web ⁇ waveguide 109 and the edges 115 are covered by a passivation effet für 121.
- the passivation layer 121 is, for example, an electrically non-conduct de ⁇ layer made of an insulator or for example from a semiconductor material having, for example, a band gap of for example at least 4 eV.
- the passivation layer 121 is formed of one of the following materials: SiN, SiO, ZrO, TaO, A10, ZnO.
- a thickness of the passivation layer 121 be ⁇ carries for example between 100 nm and 2 .mu.m.
- a Kon ⁇ taktmetallmaschine 119 is applied on the upper surface 113 of the ridge waveguide 109. About the Mixmetalli ⁇ tion 119 an electrical current layer sequence in the semiconductor 103 is impressed.
- the contact metallization 119 comprises, for example, one or more of the following materials: Pd, Pt, ZnO, ITO, Ni, Rh.
- a thickness of the contact metallization 119 is for example between 20 nm and 500 nm, in particular between 30 nm and 300 nm.
- the semiconductor laser 101 further comprises an energization layer 123 which is in direct contact with the contact metallization 119.
- the Bestromungs Mrs 123 can be electrically connected.
- the Bestromungs Mrs 123 is thus formed of an electrically conductive material.
- About the Bestromungs ⁇ layer 123 is no or no significant electrical Current impressed into the semiconductor layer sequence 103, in particular ⁇ special at Bestromungsstarn near a threshold current for the generation of laser radiation.
- a material is used as material for the energization ⁇ layer 123 is used with a good thermal conductivity, so that direct contact with the semiconductor layer sequence ⁇ 103 provides improved heat dissipation.
- Provision is made for that part of the flanks 115 are also covered with the Bestro ⁇ mung layer 123rd
- the lighting layer 123 likewise covers regions of the passivation layer 121 and is thus applied to the upper side 111 of the semiconductor layer sequence 103.
- the energizing layer 123 may also be referred to as a bond pad metallization insofar as it effects electrical contacting of the contact metallization 119 analogously to a bonding pad.
- the Bestromungs Mrs 123 is formed, for example from one or more of the following materials, respectively, comprises one or more of the following material ⁇ lien: Pd, Pt, Ti, Au, ITO, ZnO, Ni, ZnO: Al, ZnO: Ga.
- a carrier for the semiconductor layer sequence 103 is not drawn to Ver ⁇ simplification of the representation in the figures, respectively. However, such a carrier is provided according to one embodiment. Such a carrier is, for example, a growth substrate for the semiconductor layer sequence 103 or a substitute substrate different therefrom.
- the semiconductor layer sequence 103 is arranged on a wafer. To get a good threshold current, low operating currents, high
- the facets of semiconductor lasers must have an atomically smooth surface without interference from crystal dislocations.
- the wafers, on which Chen the semiconductor layer sequence is applied first broken into individual bars and then isolated to the individual semiconductor lasers, which may be formed, for example, as a semiconductor laser chip.
- the bars here define the laser resonator, which is delimited by the facets.
- the form of the current application layer for example the bondpad metallization
- the form of the current application layer has an influence on the facet quality not only via the locally generated stress fields.
- the ductility of metal as opposed to the brittle breaking semiconductor, overmolding of the ridge region at the point where the fracture occurs to create the facets can be detrimental to facet quality.
- a wide metallized area has advantages in the cooling of the semiconductor laser, in particular in a mounting of the semiconductor laser on a support, in which case the Bestromungstik facing the carrier (a so-called p-side-down assembly). This is particularly because metal conducts a resulting heat loss well and contributes to the spread of heat in the direction of a heat sink.
- the present invention is based on the insight that by providing an appropriate p-metallization (generally, by the provision of a suitable Bestromungstik) positively influenced wel ⁇ surface the tension on the mirror facets of the laser cavity, and which as much metal in the ridge area for the Heat dissipation of the chips and which in this case the refractive quality of the laser facets positively influenced, a semiconductor laser with a good threshold current, low operating currents, high efficiencies and a long life can be produced.
- an appropriate p-metallization generally, by the provision of a suitable Bestromungstik
- a structure of the Bestromungs Mrs for example, the p-type metallization, in the region of the ridge and adjacent is structured in an advantageous manner, so that the local stress in the facets for the cleaving of the facets is positively influenced.
- a good break ⁇ quality is achieved, preventing possible metal residues in the active area of the facet.
- the top surface of the semiconductor layer sequence comprises a From ⁇ section 111,103, which relative to a longitudinal axis of the Stegwel- lenleiters 109 across its width, that the width of the ex ⁇ -section, adjacent to one of both facets, wherein
- the Ab ⁇ section comprises a subsection of the upper side 113 of the Stegwel ⁇ lenleiters 109, wherein the lower portion relative to the longitudinal axis of the ridge waveguide 109 over a width of the ridge waveguide 109 extends adjacent to the one of the two facets, this section is free of the Bestromungs harsh.
- Top 113 of the ridge waveguide 109 is provided adjacent to one of the two facets, this area is free of the Bestromungstik, that is, in the ⁇ sem region no Bestromungstik is applied.
- the ridge region is advantageously recessed with the Bestromungstik.
- the Bestromungs ⁇ layer is structured accordingly to form such Be ⁇ rich, which is free of the Bestromungstik.
- the optimized bracing budget is th in Laserbe ⁇ drove better adhesion of the dielectric Spiegelschich- that are usually applied on the facets he ⁇ enough, resulting in a longer service life of the semiconductor laser.
- a profile or a contour of the passivation layer 121, respectively, of the contact metallization 119 corresponds, or corresponds, partially or completely to a contour of the energizing layer 123.
- the passivation layer 121 or the contact metallization 119 reach as far as the facet 107, ie directly or directly adjoin them.
- a profile of a contour of the passivation layer 121 respectively respeci ⁇ ve of the contact is different from a contour of the Bestromungs Mrs 123rd
- Fig. 2 shows a plan view of the first Halbleiterla- ser 101 of FIG. 1.
- the top view refers herein to the view from above on the top 111 of the semiconductor layer sequence ⁇ 103rd Because of the plan view is now further facet to erken ⁇ NEN, opposite the facet 107th This further Facet ⁇ te is provided with the reference numeral 201.
- the portion which is free from the lighting layer 123 is indicated by reference numeral 203.
- the Ab ⁇ section 203 is adjacent to the facet 107th
- the portion 203 has a quadrangular shape with one side of the quadrilateral bounded by the facet 107.
- the other three sides of the quadrilateral are bounded by power supply layer sections 213, 215, 217 of the lighting layer 123.
- the energizing layer 123 is applied to the upper side 111 of the semiconductor layer sequence 103 in such a way that a quadrangular region, the section 203, of the upper side 111 of the semiconductor layer sequence 103 remains recessed.
- a width of the portion 203 is indicated by a double arrow by the reference numeral 209.
- the width 209 is for example between 30 ym and 80 ym, in particular between 35 ym and 55 ym.
- a length of the portion 203 is indicated by a double arrow with the reference numeral 211.
- the length 211 is, for example, between 5 ym and 50 ym, in particular between 10 ym and 20 ym.
- width and length refer relative to the longitudinal axis 207 of the Stegwellenlei ⁇ ters 109th
- the width thus denotes a direction transverse to the longitudinal axis 207.
- the length thus extends longitudinally, ie parallel to the longitudinal axis 207.
- the longitudinal axis 207 of the ridge waveguide 109 is the axis of the ridge waveguide ⁇ ters 109, which runs along its largest extent.
- the longitudinal axis 207 thus runs perpendicular to the two facets 107, 201.
- a width of the Bestromungs harshabitess 215 is marked with egg ⁇ nem double arrow with reference numeral 219th
- the Width 219 is, for example, between 30 ym and 100 ym, in particular between 35 ym and 85 ym.
- a width of the lighting layer section 213 is indicated by a double arrow with the reference numeral 221, the width 221 is for example between 5 ym and 10 ym.
- a width of the Bestromungs Mrsabitess 217 is marked with egg ⁇ nem double arrow with the reference numeral the 223rd Due to the quadrangular shape of the portion 203, the width 223 corresponds to the width 209 of the portion 203.
- the section 203 further comprises a subsection 205, which is defined or fixed on the upper side 113 of the ridge waveguide 109.
- This sub-section 205 also borders across the width of the ridge waveguide 109 at the facet ⁇ te 107th That is, the sub-section 205 extends adjacent across the width, so the entire width of the Stegwellenlei ⁇ ters 109 at the facet 107th
- a region of the top side 111 of the semiconductor layer sequence 103 is free of the lighting layer 123, this region (section 203) comprising a section of the edge of the top side 111 of the semiconductor layer sequence 103 formed by the facet 107.
- a length of the semiconductor layer sequence 103 is identified by a double arrow with the reference numeral 225.
- the length 225 is, for example, between 600 ym and 2000 ym.
- a width of the semiconductor layer sequence 103 is indicated by a double arrow with the reference numeral 227.
- the width 227 is, for example, between 100 ym and 400 ym.
- a width of the Bestromungs Mrs 123 is thus the sum of the widths 219, 223 and 221.
- a length of the energization ⁇ layer 123 corresponds to the length 225, inasmuch as the Bestro ⁇ mung layer 123 in the longitudinal direction, that is longitudinal to the L Lucassach- se 207, from the facet 107 to the further facet 201.
- Fig. 3 shows a second semiconductor laser 301 in one
- the energization layer 123 does not extend from the facet 107 to the further facet 201, but is applied spaced apart from the facets 107, 201 on the upper side 111 of the semiconductor layer sequence and thus also on the upper side 113 of the ridge waveguide 109.
- the Bestromungs Mrs 123 has a rectangular shape in plan view ⁇ .
- the section 203 is shown hatched in FIG. 3.
- the reference numeral 303 points to a quadrangle which encloses a portion of the semiconductor laser 301, which is shown enlarged in FIG.
- the Bestromungs Mrs 123 is disposed at a distance 211 that speaks ent ⁇ the length of the portion 203 to the facet 107th
- a corresponding section which is free of the lighting layer 123, is also formed on the facet 201 in further exemplary embodiments which are not shown , That is to say that in the To ⁇ connexion with the section 203 of the arrival at the facet 107 borders, statements made apply analogously to the further facet 201.
- a double arrow with the reference numeral 401 is overall distinguished, the label 123 ⁇ characterized the width of the Bestromungstik.
- Fig. 5 shows a third semiconductor laser 501 in one
- the semiconductor laser 501 is analogous to the semiconductor laser 101 of FIG. 2.
- the energizing layer portion 213 lacks, so that the portion 203 which is free of the energization layer 123 is open to one side. That is, this Ab ⁇ section 203 is no longer limited by a Bestro ⁇ mungs Mrsabêt on one side.
- Fig. 6 shows a fourth semiconductor laser 601 in one
- the energizing layer 123 is substantially analogous to the energizing layer 123 according to the semiconductor laser 501 of FIG.
- a width of the Bestromungs Mrs 123 is reduced or reduced in comparison to the Halbleitla ⁇ ser 501.
- another energization ⁇ layer is provided 603, which extends in strip form from the facet to the facet 107, two hundred and first
- the further energization ⁇ layer 603 is be applied ⁇ distance from the Bestromungs Mrs 123rd This distance is indicated by a double arrow with the reference numeral 607.
- the distance 607 is for example between 10 ym and 40 ym, in particular between 20 ym and 30 ym.
- a width of the further lighting layer 603 is indicated by a double arrow with the reference numeral 605.
- the width 605 is, for example, between 10 ym and 40 ym, in particular between 20 ym and 30 ym.
- Fig. 7 shows a fifth semiconductor laser 701 in one
- Fig. 8 shows a sixth semiconductor laser 801 in one
- the semiconductor laser 801 is substantially analogous to the semiconductor laser 701 of FIG. 1.
- a second further Bestromungstik is here seen before ⁇ 803 which are spaced for further Bestromungs Mrs 603 on the top 111 of the semiconductor layer sequence 103 placed ⁇ is introduced.
- This distance is indicated by a double arrow with the reference numeral 805.
- the distance 805 corresponds, for example, to the distance 607.
- a width 807 of the further lighting layer 803 corresponds to the width of the further lighting layer 603.
- a plurality of further lighting layers are provided, which are applied in a strip-like manner on the top side 111 of the semiconductor layer sequence 103 analogously to the further lighting layers 803, 603.
- FIG. 9 shows a seventh semiconductor laser 901 in a top view of the top side 111 of the semiconductor layer sequence 103.
- the semiconductor laser 901 is substantially analogous to the semiconductor laser 601 of FIG. 6.
- a further energizing layer 803 is provided analogously to the semiconductor laser 801 of FIG.
- the statements made in connection with FIG. 8 thus also apply analogously to the semiconductor laser 901 of FIG. 9.
- a semiconductor layer sequence is brought up 103, grown, for example, with three ridge waves ⁇ conductors are formed 109th Further, two Bruchli ⁇ nien 1003 1005 are shown in dashed lines along which the wafer 1001, and thus the semiconductor layer sequence 103 is to be Gebro ⁇ chen. For example, breaking is performed along a trench that is not shown here for the sake of clarity. That is to say that the semiconductor ⁇ layer sequence 103 and the wafer 1001 have, at appropriate locations rupture grooves is along which the wafer 1001 broken with the semiconductor layer sequence 103, so that then can form along the two break lines 1003, 1005 the facets 107, 201 ,
- the Bestromungs Mrs 123 is applied to the top 111 and the top 113.
- the invention provides that a section analogous to the section 203 as to be described ⁇ connexion with Figures 1 to 9 in and is drawn, are formed. That is to say, that in the region of the fault lines 1003, 1005 there is no stray layer 123 is applied.
- FIG. 11 shows a flowchart of a method of manufacturing a semiconductor laser.
- the method comprises the steps of: - providing 1101 a semiconductor layer sequence with egg ⁇ ner active zone, the semiconductor layer sequence ei ⁇ NEN ridge waveguide comprises which is formed from the semiconductor layer sequence as an overlying the active region bringing an upper surface of the semiconductor layer sequence and along with its longitudinal axis the active one
- That the top of the semiconductor layer sequence comprises a Ab ⁇ section , based on a longitudinal axis of the
- the waveguide adjoins its width on one of the two fault lines, wherein the section comprises at least one subsection of the top side of the ridge waveguide, wherein the subsection extends over a width of the ridge waveguide with respect to the longitudinal axis of the ridge waveguide at one of the two fault lines. extending, the section being free of the
- Energizing layer is,
- the invention provides an efficient concept based on which a positive effect on the stress and fracture behavior can be achieved.
- the invention provides that the energization layer ⁇ is structured such that a region adjacent to the facet or to one of the facets, remains free from the Bestromungstik, in which case at least one Un ⁇ terab songs the top of the ridge waveguide of this area encompassed is.
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680077819.5A CN108475898A (zh) | 2015-11-06 | 2016-11-04 | 半导体激光器和用于制造半导体激光器的方法和晶圆 |
JP2018521426A JP2018532274A (ja) | 2015-11-06 | 2016-11-04 | 半導体レーザ、半導体レーザの製造方法およびウェハ |
DE112016005101.8T DE112016005101A5 (de) | 2015-11-06 | 2016-11-04 | Halbleiterlaser und Verfahren zum Herstellen eines Halbleiterlasers sowie Wafer |
US15/773,592 US20180323573A1 (en) | 2015-11-06 | 2016-11-04 | Semiconductor laser and method of producing a semiconductor laser and wafer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015119146.6 | 2015-11-06 | ||
DE102015119146.6A DE102015119146A1 (de) | 2015-11-06 | 2015-11-06 | Halbleiterlaser und Verfahren zum Herstellen eines Halbleiterlasers sowie Wafer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017077059A1 true WO2017077059A1 (de) | 2017-05-11 |
Family
ID=57223718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/076705 WO2017077059A1 (de) | 2015-11-06 | 2016-11-04 | Halbleiterlaser und verfahren zum herstellen eines halbleiterlasers sowie wafer |
Country Status (5)
Country | Link |
---|---|
US (1) | US20180323573A1 (de) |
JP (1) | JP2018532274A (de) |
CN (1) | CN108475898A (de) |
DE (2) | DE102015119146A1 (de) |
WO (1) | WO2017077059A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017117135A1 (de) * | 2017-07-28 | 2019-01-31 | Osram Opto Semiconductors Gmbh | Verfahren zur Herstellung einer Mehrzahl von Laserdioden und Laserdiode |
DE102018114133B4 (de) * | 2018-06-13 | 2024-05-08 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Halbleiterlaser und Herstellungsverfahren für einen Halbleiterlaser |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008014092A1 (de) * | 2007-12-27 | 2009-07-02 | Osram Opto Semiconductors Gmbh | Kantenemittierender Halbleiterlaserchip mit einem strukturierten Kontaktstreifen |
US20090185594A1 (en) * | 2008-01-21 | 2009-07-23 | Sanyo Electric Co., Ltd. | Semiconductor laser device and method of manufacturing the same |
US20130028280A1 (en) * | 2011-07-27 | 2013-01-31 | Sony Corporation | Semiconductor laser element and manufacturing method of the same |
DE102012106687A1 (de) | 2012-07-24 | 2014-02-13 | Osram Opto Semiconductors Gmbh | Steglaser |
WO2015055644A1 (de) | 2013-10-14 | 2015-04-23 | Osram Opto Semiconductors Gmbh | Halbleiterlaser mit einseitig verbreiterter ridgestruktur |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI303909B (en) * | 2002-11-25 | 2008-12-01 | Nichia Corp | Ridge waveguide semiconductor laser diode |
GB0306479D0 (en) * | 2003-03-21 | 2003-04-23 | Corning O T I Spa | Lasers and methods of making them |
FR2903824A1 (fr) * | 2006-07-13 | 2008-01-18 | Leroy Somer Moteurs | Rotor de machine tournante electrique et procede de fabrication |
JP2008205139A (ja) * | 2007-02-20 | 2008-09-04 | Sanyo Electric Co Ltd | 窒化物系半導体レーザ素子 |
JP4845790B2 (ja) * | 2007-03-30 | 2011-12-28 | 三洋電機株式会社 | 半導体レーザ素子およびその製造方法 |
JP2009158647A (ja) * | 2007-12-26 | 2009-07-16 | Sharp Corp | 窒化物系半導体レーザ素子およびその製造方法 |
JP2010041035A (ja) * | 2008-06-27 | 2010-02-18 | Sanyo Electric Co Ltd | 半導体レーザ素子およびその製造方法ならびに光ピックアップ装置 |
JP4959644B2 (ja) * | 2008-07-24 | 2012-06-27 | シャープ株式会社 | 半導体レーザ素子、半導体ウェハおよび半導体レーザ素子の製造方法 |
-
2015
- 2015-11-06 DE DE102015119146.6A patent/DE102015119146A1/de not_active Withdrawn
-
2016
- 2016-11-04 WO PCT/EP2016/076705 patent/WO2017077059A1/de active Application Filing
- 2016-11-04 JP JP2018521426A patent/JP2018532274A/ja active Pending
- 2016-11-04 CN CN201680077819.5A patent/CN108475898A/zh active Pending
- 2016-11-04 US US15/773,592 patent/US20180323573A1/en not_active Abandoned
- 2016-11-04 DE DE112016005101.8T patent/DE112016005101A5/de not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008014092A1 (de) * | 2007-12-27 | 2009-07-02 | Osram Opto Semiconductors Gmbh | Kantenemittierender Halbleiterlaserchip mit einem strukturierten Kontaktstreifen |
US20090185594A1 (en) * | 2008-01-21 | 2009-07-23 | Sanyo Electric Co., Ltd. | Semiconductor laser device and method of manufacturing the same |
US20130028280A1 (en) * | 2011-07-27 | 2013-01-31 | Sony Corporation | Semiconductor laser element and manufacturing method of the same |
DE102012106687A1 (de) | 2012-07-24 | 2014-02-13 | Osram Opto Semiconductors Gmbh | Steglaser |
WO2015055644A1 (de) | 2013-10-14 | 2015-04-23 | Osram Opto Semiconductors Gmbh | Halbleiterlaser mit einseitig verbreiterter ridgestruktur |
Also Published As
Publication number | Publication date |
---|---|
JP2018532274A (ja) | 2018-11-01 |
DE112016005101A5 (de) | 2018-07-19 |
CN108475898A (zh) | 2018-08-31 |
US20180323573A1 (en) | 2018-11-08 |
DE102015119146A1 (de) | 2017-05-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69534700T2 (de) | Halbleiteranordnungen und verfahren | |
EP2564478B1 (de) | Laserlichtquelle | |
DE102008014093B4 (de) | Kantenemittierender Halbleiterlaserchip mit zumindest einer Strombarriere | |
EP2248235B1 (de) | Kantenemittierender halbleiterlaser und verfahren zur herstellung eines kantenemittierenden halbleiterlasers | |
DE102017108949B4 (de) | Halbleiterchip | |
EP2191520B1 (de) | Lichtemittierende dünnfilm-diode mit einer spiegelschicht und verfahren zu deren herstellung | |
WO2009082999A2 (de) | Kantenemittierender halbleiterlaserchip mit einem strukturierten kontaktstreifen | |
DE102016125857A1 (de) | Halbleiterlaserdiode | |
DE10153321B4 (de) | Leuchtdiode mit Bragg-Reflektor und Verfahren zur Herstellung derselben | |
DE69707390T2 (de) | Strahlungsemittierende halbleiterdiode und deren herstellungsverfahren | |
WO2014095903A1 (de) | Verfahren zur herstellung von halbleiter-laserelementen und halbleiter-laserelement | |
DE102016106949B4 (de) | Kantenemittierender Halbleiterlaser | |
WO2019042827A1 (de) | Kantenemittierender laserbarren | |
EP2218153B1 (de) | Verfahren zur herstellung eines strahlungsemittierenden bauelements und strahlungsemittierendes bauelement | |
EP2523279A2 (de) | Breitstreifen-Diodenlaser mit hoher Effizienz und geringer Fernfelddivergenz | |
WO2017077059A1 (de) | Halbleiterlaser und verfahren zum herstellen eines halbleiterlasers sowie wafer | |
DE60311844T2 (de) | Hochleistungs-halbleiterlaserdiode und verfahren zur herstellung einer solchen diode | |
DE102013216527A1 (de) | Laserbauelement und Verfahren zum Herstellen eines Laserbauelements | |
DE2312162A1 (de) | Heterogenaufbau-injektionslaser und verfahren zu seiner herstellung | |
DE102011077542B4 (de) | Optoelektronischer halbleiterkörper und verfahren zur herstellung eines optoelektronischen halbleiterkörpers | |
DE102022111977A1 (de) | Breitstreifen-Diodenlaser mit integriertem p-n-Tunnelübergang | |
DE102013223499A1 (de) | Breitstreifenlaser und Verfahren zum Herstellen eines Breitstreifenlasers | |
WO2020078744A1 (de) | Halbleiterlaser und herstellungsverfahren für halbleiterlaser | |
EP1873879A1 (de) | Kantenemittierender Halbleiterlaser | |
WO2019121407A1 (de) | Halbleiterlaser, betriebsverfahren für einen halbleiterlaser und methode zur bestimmung des optimalen füllfaktors eines halbleiterlasers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16790409 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2018521426 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15773592 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112016005101 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R225 Ref document number: 112016005101 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16790409 Country of ref document: EP Kind code of ref document: A1 |