CN106877127A - A kind of medium cascades solid state laser - Google Patents
A kind of medium cascades solid state laser Download PDFInfo
- Publication number
- CN106877127A CN106877127A CN201710247713.1A CN201710247713A CN106877127A CN 106877127 A CN106877127 A CN 106877127A CN 201710247713 A CN201710247713 A CN 201710247713A CN 106877127 A CN106877127 A CN 106877127A
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- gain media
- end mirror
- solid state
- state laser
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- 239000007787 solid Substances 0.000 title claims abstract description 21
- 230000010287 polarization Effects 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10061—Polarization control
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
A kind of medium cascades solid state laser, including：Be mutually perpendicular to stagger first gain media (3) and the second gain media (4) of setting, realize that light path is connected using polarization beam splitter (6) between the two, and the first end mirror (1) and the second end mirror (2) constitute two end mirrors of resonator, namely the first end mirror (1) is followed successively by light path, first gain media (3), polarization beam splitter (6), second gain media (4), second end mirror (2), wherein also include the wave plate (5) being arranged in resonator, wave plate (5) is 1/2nd wave plates of pump light, it is the quarter-wave plate of lasing light, realize the efficient utilization of pump light and realize the identical laser output of photon phase.
Description
Technical field
The present invention relates to a kind of solid state laser, belong to photoelectron technical field.
Background technology
Solid state laser belongs to a kind of laser commonly used very much in optoelectronic areas, and its advantage is very apparent
's.But, light power can not still reach requirement to the solid state laser for being used at present under many circumstances, prior art in order to
Realize powerful laser output, the mode for often being combined using multiple gain medias, wherein the plurality of gain media uses
Individual common end mirror, powerful output is realized with this, wherein be exactly common speculum as the speculum of common end mirror,
Realize the locking of excitation wavelength and phase in each dielectric resonant chamber by the speculum, but this mode be typically necessary it is right
Each gain media accurately position to ensure that the resonator where each gain media realizes sufficient gain and vibration.
It is exactly that the utilization ratio of pump light compares also, solid state laser of the prior art also has another distinct issues
Low, many pump lights fail to be fully absorbed and have left gain media, cause a large amount of wastes of pump light.
The content of the invention
An embodiment of the invention, there is provided a kind of medium cascades solid state laser, including：It is mutually perpendicular to stagger and sets
The first gain media (3) and the second gain media (4) put, realize that light path is connected using polarization beam splitter (6) between the two, and
First end mirror (1) and the second end mirror (2) constitute two end mirrors of resonator, namely the first end mirror (1) is followed successively by light path, the
One gain media (3), polarization beam splitter (6), the second gain media (4), the second end mirror (2), wherein also including being arranged on resonance
Wave plate (5) in chamber, wave plate (5) is 1/2nd wave plates of pump light, is the quarter-wave plate of lasing light, realizes pump light
Efficient utilization and realize the output of photon phase identical laser.
An embodiment of the invention, respectively by the first end mirror and the second end mirror incident pump light, and two pumpings
The polarization direction of light is mutually perpendicular to.
An embodiment of the invention, the polarization beam splitter (6) is set for 45 degree of angles.
An embodiment of the invention, there is provided a kind of method of generation laser beam, by the incident pumping of the first end mirror
Light enters the second gain media by the remainder after the first gain media, by the incident pump light of the second end mirror by the
Remainder after two gain medias enters the first gain media.
An embodiment of the invention, each laser beam of the solid state laser outgoing is all complete twice by
Resonator could be projected after one gain media and the second gain media.
An embodiment of the invention, solid state laser has bigger longitudinal mode spacing.
Brief description of the drawings
Accompanying drawing 1 is solid state laser schematic diagram of the invention；
In above-mentioned figure, (1) and (2) represents the first end mirror and the second end mirror respectively, and (3) and (4) represent that first increases respectively
Beneficial medium and the second gain media, (5) represent wave plate, and (6) represent 45 degree of polarization beam splitters of setting, and S is represented by the first end mirror
Incident pump light, P is represented by the incident pump light of the second end mirror.
Specific embodiment
Solid state laser of the invention will be described in detail on the basis of with reference to accompanying drawing below.Solid state laser of the invention
Including the first gain media (3) and the second gain media (4), as shown in figure 1, the first gain media (3) and the second gain media
(4) setting of staggering is mutually perpendicular to, realizes that light path is connected using polarization beam splitter (6) between the two, and the first end mirror (1) and second
End mirror (2) constitutes two end mirrors of resonator, namely the first end mirror (1) is followed successively by light path, the first gain media (3), partially
Shake beam splitting chip (6), the second gain media (4), the second end mirror (2), and wherein wave plate (5) may be provided at the optional position in resonator
On, wave plate (5) therein is 1/2nd wave plates of pump light, is the quarter-wave plate of lasing light.
The following detailed description of the operation principle of solid state laser of the invention.Solid state laser of the invention uses laser two
Pole pipe carries out pumping, and pump light is respectively provided with linear polarization, and by the first end mirror and the polarization of the incident pump light of the second end mirror
Direction is mutually perpendicular to, such as be S-polarization by the incident pump light S of first end, then be just by the incident pump light P of the second end mirror
P polarization, for pump light S, unabsorbed part then can be by ripple after pump light S passes through the first gain media (3)
Piece (5), for pump light is 1/2nd wave plates due to wave plate (5), then pump light S by after wave plate (5) just
It is changed into P polarization light, polarization beam splitter (6) reflected P polarization transmission S-polarization, so remaining and be transformed to P via wave plate (5)
The pump light S incident by the first end mirror of polarization is reflexed in the second gain media (4) by the second gain by polarization beam splitter (6)
Medium (4) is absorbed, and is thereby increased by the utilization ratio of the incident pump light of the first end mirror, meanwhile, it is incident by the second end mirror
Pump light P be P polarization, it reflects it by unabsorbed part after the second gain media (4) by polarization beam splitter (6)
It is changed into S-polarization and is entered from wave plate (5) afterwards to be absorbed in the first gain media (3), thus also increases incident by the second end mirror
Pump light utilization ratio.
Meanwhile, more importantly it is, because wave plate (5) is for quarter-wave plate, and for lasing light
Polarization beam splitter (6) is provided between one gain media and the second gain media, has been achieved in that the first gain media and the
Two gain medias are bundled and form resonator single in an effect, because either being produced in the first gain media
Raw lasing light, or the lasing light produced in the second gain media, are required at least through the first gain media twice simultaneously
And could project resonator after twice at least through the second gain media, so its it is substantial from effect for the first gain
Medium and the second gain media equivalent to the two of resonator parts, this with the prior art by common end mirror come real
There is essential distinction in the phase correlation of existing injection seeded.
On the one hand it is making full use of for pump light due to the presence of above-mentioned two reason, and whole laser includes
Two gain medias, and pumping is all carried out from two end mirrors, thereby ensure that the high-power pump light of high efficiency, it is high
The laser output of power provides premise；Still further aspect, due to wave plate (5) for lasing light be quarter-wave
Piece, is required for leading at least twice this guarantees the lasing light produced in either the first gain media or the second gain media
Crossing the first gain media and the second gain media could project resonator, and this substantially ensure that by each of the laser emitting
Laser beam complete must all increase by the first gain media and the second gain media, namely the first gain media and second twice
Beneficial medium is substantially a resonator, two gain medias equivalent to being concatenated together, rather than sharing one the two of end mirror
Individual resonator, do so ensure that the more preferable coherence of shoot laser first, and the form for sharing end mirror realizes the correlation of phase
Property be to be realized by the effect of similar injection seeded, and the resonator in the application is then only by one laser beam, wherein photon
Phase be it is completely the same, this effect significantly better than injection seeded form.Furthermore, because laser beam needs at least twice
The more whole resonator of degree, can so realize more stable single-mode output, because longitudinal mode spacing is bigger.
Claims (6)
1. a kind of medium cascades solid state laser, including：Be mutually perpendicular to stagger setting the first gain media (3) and the second gain
Medium (4), realizes that light path is connected using polarization beam splitter (6) between the two, and the first end mirror (1) and the second end mirror (2) composition
Two end mirrors of resonator, namely the first end mirror (1) is followed successively by light path, the first gain media (3), polarization beam splitter (6),
Second gain media (4), the second end mirror (2), wherein also including the wave plate (5) being arranged in resonator, wave plate (5) is pump light
1/2nd wave plates, be the quarter-wave plate of lasing light, realize the efficient utilization of pump light and realize that photon phase is complete
Identical laser is exported.
2. medium according to claim 1 cascades solid state laser, it is characterised in that：Respectively by the first end mirror and the second end
Mirror incident pump light, and the polarization direction of two pump lights is mutually perpendicular to.
3. medium according to claim 2 cascades solid state laser, it is characterised in that：The polarization beam splitter (6) is 45
Degree angle is set.
4. a kind of method that medium cascade solid state laser as claimed in claim 1 produces laser beam, it is characterised in that：By
The incident pump light of one end mirror enters the second gain media by the remainder after the first gain media, is entered by the second end mirror
The pump light penetrated enters the first gain media by the remainder after the second gain media.
5. method according to claim 4, it is characterised in that：The medium cascades each laser of solid state laser outgoing
Beam is all complete twice by that could project resonator after the first gain media and the second gain media.
6. method according to claim 5, it is characterised in that：The medium cascade solid state laser has bigger longitudinal mode
Interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247713.1A CN106877127A (en) | 2017-04-17 | 2017-04-17 | A kind of medium cascades solid state laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247713.1A CN106877127A (en) | 2017-04-17 | 2017-04-17 | A kind of medium cascades solid state laser |
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| Publication Number | Publication Date |
|---|---|
| CN106877127A true CN106877127A (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710247713.1A Pending CN106877127A (en) | 2017-04-17 | 2017-04-17 | A kind of medium cascades solid state laser |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373539A (en) * | 2002-04-04 | 2002-10-09 | 华东师范大学 | Ring laser device |
| CN201247902Y (en) * | 2008-07-22 | 2009-05-27 | 福州高意通讯有限公司 | Sum-frequency laser |
| US20100074280A1 (en) * | 2008-09-25 | 2010-03-25 | Yingjun Ma | Single-longitudinal mode laser with orthogonal-polarization traveling-wave mode |
| CN105720469A (en) * | 2016-04-18 | 2016-06-29 | 长春理工大学 | Laser improving weak pump laser efficiency based on light polarization torsion |
| CN106356713A (en) * | 2016-10-20 | 2017-01-25 | 武汉市凯瑞迪激光技术有限公司 | Mode locking laser device of rotary gain medium of semiconductor laser device end face pumping |
-
2017
- 2017-04-17 CN CN201710247713.1A patent/CN106877127A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373539A (en) * | 2002-04-04 | 2002-10-09 | 华东师范大学 | Ring laser device |
| CN201247902Y (en) * | 2008-07-22 | 2009-05-27 | 福州高意通讯有限公司 | Sum-frequency laser |
| US20100074280A1 (en) * | 2008-09-25 | 2010-03-25 | Yingjun Ma | Single-longitudinal mode laser with orthogonal-polarization traveling-wave mode |
| CN105720469A (en) * | 2016-04-18 | 2016-06-29 | 长春理工大学 | Laser improving weak pump laser efficiency based on light polarization torsion |
| CN106356713A (en) * | 2016-10-20 | 2017-01-25 | 武汉市凯瑞迪激光技术有限公司 | Mode locking laser device of rotary gain medium of semiconductor laser device end face pumping |
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Application publication date: 20170620 |