CN201708435U - Laser of LD pump - Google Patents
Laser of LD pump Download PDFInfo
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- CN201708435U CN201708435U CN2009201207901U CN200920120790U CN201708435U CN 201708435 U CN201708435 U CN 201708435U CN 2009201207901 U CN2009201207901 U CN 2009201207901U CN 200920120790 U CN200920120790 U CN 200920120790U CN 201708435 U CN201708435 U CN 201708435U
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- end mirror
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Abstract
A laser of an LD pump sequentially comprises an optical platform, a semiconductor laser pump, a working substance and a first planar reflection end mirror of a laser resonant cavity, as well as a support. After the working substance of the laser absorbs the energy radiated from an LD end face pumping source, inversion population distribution is formed, Nd3+ jumps between energy levels 4F3/2 and 4F11/2 to generate excited fluorescent radiation of 1067nm waveband, and the radiated fluorescent forms stable fundamental frequency light after oscillated and amplified in the corresponding laser resonant cavity. A first end surface of crystal is plated with 808nm high transmittance, 1067nm and 1180nm high-reflective film layers as a first planar total reflection end mirror of the laser resonant cavity. The fundamental frequency light outputs laser by the planar total reflection end mirror after passing through a passive saturable absorption adjusting Q crystal, a KTP frequency doubling crystal, and a semi-reflection surface which is taken as the laser resonant cavity.
Description
Technical field:
The utility model relates to a kind of laser, particularly the LD end pumping continuously/pulse high efficiency near infrared light, green wavelength crystal laser.
Background technology:
Since nineteen sixty, the ruby laser of first xenon flash lamp pumping was born in the world, all kinds of lasers and laser technology development were very rapid.Jia Fan (A.Javan) utility model in 1961 first gas laser (He-Ne).Semiconductor laser appearred in 1962.Pa Teer (C.Patel) utility model in 1964 first CO2 laser.Nineteen sixty-five the Bell Laboratory utility model first YAG laser.Wherein the development of all solid state multiple-wavelength laser gets most of the attention, and it has overcome the defective of laser output single wavelength and instrument heaviness, and vast market and application prospect are all arranged in numerous areas, has become popular research topic both domestic and external.As all solid state multiple-wavelength laser, with its unique advantage in the visible light wave range scope, in laser medicine, laser color demonstration, laser full color film, atmospheric monitoring and scientific experiment and research, occupy an important position, theoretical researching value and using value are quite arranged.All there are many nonlinear optical crystals that utilize to carry out laser frequency conversion in recent years both at home and abroad to obtain the relevant report of multiwavelength laser.For example utilize neodymium-doped yttrium-aluminum garnet Nd:YAG to make the near-infrared laser of 1064nm be converted to the green glow of 532nm, can produce the dual laser that red, green wavelength is exported simultaneously or single wavelength is exported by ktp crystal.Also has output when adopting lamp pumping 6 word chambeies and 8 word cavity configurations to realize red, green double-wavelength laser in the Chinese patent application 02117364.8.In above-mentioned two technology, can only export red, green double-wavelength laser simultaneously, the latter adopts the lamp pump mode, and conversion efficiency is low, and the cavity structure complexity is not easy to shortcomings such as adjusting.
Summary of the invention:
The utility model provides a kind of LD pump laser, its continuous/pulse output high efficiency near infrared light, green wavelength laser, near-infrared, green glow multiwavelength laser both can be exported simultaneously, also can alternately export, and have conversion efficiency height, compact conformation, advantages such as operating cost is low, adjusting is flexible, functional expansionary, work safety.
The utility model is achieved by the following technical solution: a kind of laser of LD pumping, its principal character is that it comprises optical table successively, semiconductor laser pumping, the first plane reflection end mirror of operation material and laser resonant cavity, also comprise support, after the operation material of this laser absorbs the energy of LD end pumping source radiation, the formation inverted population distributes, Nd3+ transition between energy level 4F3/2 and 4F11/2, produce the excited fluorescence radiation of 1067nm wave band, the vibration in corresponding laser resonant cavity of the fluorescence of radiation is amplified the back and is formed stable fundamental frequency light; First end face of crystal promptly is coated with high saturating, 1067nm of 808nm and the high anti-rete of 1180nm as the first plane total reflection end mirror of laser resonant cavity; Fundamental frequency light is by plane total reflection end mirror, through passive type saturable absorption adjusting Q crystal, KTP frequency-doubling crystal, as the semi-reflective surface output laser of laser resonant cavity.
In the utility model, first end face of laser crystal and plano-concave reflection outgoing mirror constitute resonant cavity.
Described Laser Power Devices can by TTL conversion continuously/work under two kinds of patterns of pulse.
The mode of end pumping is adopted in described semiconductor LD pumping, the laser of output 808nm.
Described operation material is Nd
3+: KGd (WO4)
2Can finish Raman separately from conversion, it has good physics, optics, mechanical performance, and when q-operation, 1067nm laser produces very strong Stocks and anti-Stocks laser in crystal, becomes the high efficiency multiple wavelength laser light source of visible waveband after frequency multiplication.
The output wavelength of described LD laser pumping source is 808nm (being operated in 25 degree), and operation material Nd
3+: KGd (WO4)
2One of absworption peak also at 808nm, absorption efficiency is very high like this.
There is passive type saturable absorption adjusting Q crystal in described system, can improve the instantaneous power of laser greatly, and passive type saturable absorption adjusting Q crystal has interference simple in structure, easy to use, as not have electricity, can to obtain peak power be that several megawatts, pulsewidth are the advantages such as giant pulse of tens nanoseconds.
Described plano-concave outgoing mirror is: infrared laser (IR) ROC=-75mm, T=5%at1067nm, material-BK7, laser to 1067nm has semi-transparent semi-reflecting effect, make a part of laser return the excitation operation material, a part sees through, and is the output laser of needed 1067nm wavelength.
Described KTP frequency-doubling crystal can be realized first-harmonic (TEM
00) conversion of 1067nm and 1180nm laser freuqency doubling.
Described continuously/output when pulse high efficiency near infrared light, green glow multiple-wavelength laser can be realized several wavelength laser, also can realize the output of single wavelength laser by adding filter plate.
Utilize laser crystal first end face (be coated with at 1067nm and 1180nm high anti-, at the high saturating rete of 808nm: R
1067～99.5%, R
1180～99.1%, R
808～1.2%) makes the fully reflecting surface of laserresonator, the LD laser of 808nm is seen through, in the chamber, make the almost total reflection of laser of 1067nm and 1180nm, reduced the element that constitutes laser resonant cavity like this, and make its result more simple compact, use more convenient.So what this LD pumping source drove is complete the operation material Nd of attitude laser
3+: KGd (WO4)
2Can finish Raman separately from conversion, improve the efficient of laser so greatly, and made structure more simple.Output when the utility model laser both can have been realized near-infrared, green wavelength laser can utilize filter apparatus to realize the alternately output of three kinds of laser again, makes its scope of application more extensive.
Description of drawings:
Fig. 1 is a structure diagram of the present utility model;
Fig. 2 is LD laser and laser crystal absorption line.
Embodiment:
Accompanying drawing 1 be the utility model LD end pumping continuously/pulse high efficiency near infrared light, green glow multi-wavelength neodymium-doped potassium-gadolinium crystal laser structural representation.
The utility model is described in further detail below in conjunction with figure.Embodiment is with reference to shown in the accompanying drawing 1, be provided with successively on the horizontal optical path of incident plano-concave completely reflecting mirror of the present utility model: it comprises optical table 1 successively, semiconductor laser pumping 2, the first plane reflection end mirror of operation material 3 and laser resonant cavity, the operation material of this laser is neodymium-doped potassium-gadolinium (Nd
3+: KGd (WO4)
2) laser crystal, neodymium-doped concentration is 4% potassium-gadolinium laser crystal, after absorbing the energy of LD end pumping source (2) radiation, the formation inverted population distributes, Nd3+ transition between energy level 4F3/2 and 4F11/2, produce the excited fluorescence radiation of 1067nm wave band, the vibration in corresponding laser resonant cavity of the fluorescence of radiation is amplified the back and is formed stable fundamental frequency light; First end face of crystal, promptly as the first plane total reflection end mirror of laser resonant cavity be coated with 808nm high saturating, at 1067nm (R ≈ 99.5) and the anti-rete of 1180nm (R ≈ 99.1) height; Fundamental frequency light is by plane total reflection end mirror, through passive type saturable absorption adjusting Q crystal 4, KTP frequency-doubling crystal 5, outgoing mirror also as the semi-reflective surface 6 output laser of laser resonant cavity (different chambeies is long, outgoing mirror with whether add passive Q-adjusted crystal etc. and can produce 1067nm, the 533nm laser different) with the 1180nm wavelength; Support 7.
Neodymium-doped tungstic acid potassium laser crystal is subjected to the laser pumping of LD pump laser, behind the energy of absorption LD end pumping source radiation, forms population inversion and distributes, and Nd3+ is at energy level 4
F3/ 2 and 4F
11/2Between transition, produce the fluorescence of 1067nm, the fluorescence of radiation first end face of laser crystal (be coated with 808nm high saturating, at 1067nm (R ≈ 99.5) and the high anti-rete of 1180nm (R ≈ 99.1)) and the resonant cavity that forms of outgoing mirror in the stable fundamental frequency light of formation after the vibration amplification.Zlasing mode by long change can the change output of resonant cavity chamber.When the long L in chamber was 64cm, the fundamental frequency that the back forms stable 1067nm was amplified in vibration; Laser crystal is by the Raman light of Raman from conversion formation 1180 when the long L in instantaneous power, chamber that transfers Q to improve laser in the rear side insertion of laser crystal is 43cm.
Claims (1)
1. the laser of a LD pumping, it is characterized in that it comprises optical table (1) successively, semiconductor laser pumping (2), the first plane reflection end mirror of operation material (3) and laser resonant cavity, also comprise support (7), after the operation material of this laser absorbs the energy of LD end pumping source radiation, the formation inverted population distributes, Nd3+ transition between energy level 4F3/2 and 4F11/2, produce the excited fluorescence radiation of 1067nm wave band, the vibration in corresponding laser resonant cavity of the fluorescence of radiation is amplified the back and is formed stable fundamental frequency light; First end face of crystal promptly is coated with high saturating, 1067nm of 808nm and the high anti-rete of 1180nm as the first plane total reflection end mirror of laser resonant cavity; Fundamental frequency light is by plane total reflection end mirror, through passive type saturable absorption adjusting Q crystal (4), KTP frequency-doubling crystal (5), as semi-reflective surface (6) the output laser of laser resonant cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201207901U CN201708435U (en) | 2009-06-01 | 2009-06-01 | Laser of LD pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201207901U CN201708435U (en) | 2009-06-01 | 2009-06-01 | Laser of LD pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708435U true CN201708435U (en) | 2011-01-12 |
Family
ID=43445587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201207901U Expired - Fee Related CN201708435U (en) | 2009-06-01 | 2009-06-01 | Laser of LD pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832535A (en) * | 2012-09-21 | 2012-12-19 | 厦门大学 | Solid-state 698nm deep red laser device with blue laser light-emitting diode (LED) pump |
-
2009
- 2009-06-01 CN CN2009201207901U patent/CN201708435U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832535A (en) * | 2012-09-21 | 2012-12-19 | 厦门大学 | Solid-state 698nm deep red laser device with blue laser light-emitting diode (LED) pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20130601 |