CN103594919A - Device capable of improving linear polarization laser output of solid laser - Google Patents
Device capable of improving linear polarization laser output of solid laser Download PDFInfo
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- CN103594919A CN103594919A CN201310566040.8A CN201310566040A CN103594919A CN 103594919 A CN103594919 A CN 103594919A CN 201310566040 A CN201310566040 A CN 201310566040A CN 103594919 A CN103594919 A CN 103594919A
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Abstract
The invention discloses a device capable of improving linear polarization laser output of a solid laser. The device comprises a first mirror, a semiconductor laser linear array side pump laser module, a polarization device, a second mirror and a power meter. Laser emitted by the semiconductor laser linear array side pump laser module can form oscillation between the first mirror, the semiconductor laser linear array side pump laser module, the polarization device and the second mirror, and the laser passes through the polarization device to be in a p polarization state or an s polarization state to be received by the power meter. The device can enable the other part of separated light of the linear polarization output light to return to a resonant cavity again to be fully utilized, so that the final linear polarization output light power is greatly improved. Furthermore, the device can flexibly adjust the linear polarization output direction of the solid laser to enable the linear polarization light output by the solid laser to be in the s polarization state and the p polarization state. In addition, the solid laser is more flexible to use and wider in application range.
Description
Technical field
The present invention relates to semiconductor laser technique field, relate in particular to a kind of device that combines to improve the output of solid state laser linearly polarized laser with polarizer with L-type resonant cavity.
Background technology
Along with the development of laser technology, people are more and more higher to the requirement of the power output of laser.Yet along with the increase of diode pumped power, the thermal effect of laser medium is more and more obvious, causes the phenomenons such as thermally induced birefringence.The laser that needs linearly polarized light beam for running, as electric-optically Q-switched, frequency translation and light beam external modulation etc., the Depolarization being caused by thermally induced birefringence will obviously increase, and this makes directly from the laser of laser output, can not present single linear polarization characteristic.And in this case on the market the common device that obtains linear polarization output make the linearly polarized laser power loss of final output serious, linear polarization delivery efficiency is generally on the low side.
Summary of the invention
It is serious that the present invention is intended to improve in existing great-power solid laser the hot depolarization phenomenon of laser medium, to such an extent as to the laser of exporting can not present single linear polarization characteristic, has a strong impact on this situation of linear polarization power output of laser.
According to an aspect of the present invention, it provides a kind of device that improves the output of solid state laser linearly polarized laser, and it comprises the first total reflective mirror, semiconductor laser linear array side-pump laser module, polarizer, the second total reflective mirror and power meter; Wherein, the laser that described semiconductor laser linear array side-pump laser module is sent forms vibration between the first total reflective mirror, semiconductor laser linear array side-pump laser module, polarizer and the second total reflective mirror, and is received by power meter at the laser that is p polarization state or s polarization state after polarizer.
Wherein, polarizer surface is coated with polarization beam splitter, when laser beam incidence angle is at a certain angle incident to polarizer, in laser beam the light of p polarization state can be directly through polarizer and along straightline propagation, and the light of s polarization state can reflect.
Wherein, the second total reflective mirror is placed perpendicular to the light that is polarized the s polarization state that device separates or the light of p polarization state is placed.
Wherein, described the first total reflective mirror and the second total reflective mirror form laserresonator, and the second total reflective mirror is also used for residue laser reflection is returned to resonant cavity.
Wherein, when total reflective mirror is placed perpendicular to the light of s polarization state, described power meter is for receiving the light of p polarization state, and total reflective mirror is when place perpendicular to the light of p polarization state, and described power meter is for receiving the light of s polarization state.
Wherein, described certain angle is 56 ° of angles.
The present invention has following beneficial effect:
Polarization laser output device provided by the present invention, can make each part light all be fully utilized, there is the linear polarization delivery efficiency obviously improving than general polarization laser output device, and the laser rays polarization state of its output can change flexibly between p and s, has convenient and practical outstanding characteristic.This device can be applied in all laser production processes to be had in the laser of Depolarization.
Accompanying drawing explanation
Fig. 1 is the structure drawing of device that improves the output of solid state laser linearly polarized laser in first embodiment of the invention;
Fig. 2 is the structure drawing of device that improves the output of solid state laser linearly polarized laser in second embodiment of the invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in further detail.
Fig. 1 shows a kind of device that improves the output of solid state laser linearly polarized laser proposing in first embodiment of the invention.As shown in Figure 1, this device comprises: total reflective mirror 1, semiconductor laser linear array side-pump laser module 2, polarizer 3, total reflective mirror 4 and power meter 5.
Wherein, total reflective mirror 1 and polarizer 3 are positioned at the both sides of semiconductor laser side-pump laser module 2, described semiconductor laser linear array side-pump laser module 2 is for sending laser, described polarizer 3 surfaces are coated with polarization beam splitter, and the laser that its surface and described semiconductor laser linear array side-pump laser module 2 are sent at an angle, and this angle is preferably 56 °; When described laser beam is incident to polarizer 3 with this certain angle, in laser beam the light of p polarization state can be directly through polarizer 3 and along straightline propagation, and the light of s polarization state is reflected.
Described total reflective mirror 4 is placed perpendicular to the light path of described p polarization state light or s polarization state light, and for reflecting p light or s light, and power meter 5 is placed on the light path of described s polarization state light or p polarization state light, the s polarised light or the p polarised light that for receiving this device of detection, produce.When the s light after total reflective mirror 4 separates perpendicular to quilt is placed, form laserresonator with total reflective mirror 1, the light that semiconductor laser linear array side-pump laser module 2 is sent forms vibration between total reflective mirror 1, semiconductor laser linear array side-pump laser module 2, polarizer 3 and total reflective mirror 4, after polarizer 3, be the directly output of laser of p polarization, by power meter 5, received and survey.
When the p light after total reflective mirror 4 separates perpendicular to quilt is placed, form laserresonator with total reflective mirror 1, the light that semiconductor laser linear array side-pump laser module 2 is sent forms vibration between total reflective mirror 1, semiconductor laser linear array side-pump laser module 2, polarizer 3 and total reflective mirror 4, after polarizer 3, be the directly output of laser of s polarization, by power meter 5, received and survey.Fig. 1 is total reflective mirror 4 perpendicular to the situation of being placed by the s light after separately, and now total reflective mirror 4 forms laserresonator with total reflective mirror 1, and the s polarised light being separated by polarizing device 3 is returned and in resonant cavity, again participates in laser generation by total reflective mirror 4 total reflections.The light that semiconductor laser linear array side-pump laser module 2 is sent forms vibration between total reflective mirror 1, semiconductor laser linear array side-pump laser module 2, polarizer 3 and total reflective mirror 4, after polarizer 3, be the directly output of laser of p polarization, by power meter 5, received and survey.
Fig. 2 is a kind of device that improves the output of solid state laser linearly polarized laser proposing in second embodiment of the invention.As shown in Figure 2, in this embodiment, total reflective mirror 4 is perpendicular to being placed by the p light after separately, and now total reflective mirror 4 and total reflective mirror 1 form laserresonator, and the p polarised light being separated by polarizing device 3 is returned and in resonant cavity, again participates in laser generation by total reflective mirror 4 total reflections.The light that semiconductor laser linear array side-pump laser module 2 is sent forms vibration between total reflective mirror 1, semiconductor laser linear array side-pump laser module 2, polarizer 3 and total reflective mirror 4, after polarizer 3, be the directly output of laser of s polarization, by power meter 5, received and survey
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a device that improves the output of solid state laser linearly polarized laser, it comprises the first total reflective mirror, semiconductor laser linear array side-pump laser module, polarizer, the second total reflective mirror and power meter; Wherein, the laser that described semiconductor laser linear array side-pump laser module is sent forms vibration between the first total reflective mirror, semiconductor laser linear array side-pump laser module, polarizer and the second total reflective mirror, and is received by power meter at the laser that is p polarization state or s polarization state after polarizer.
2. linearly polarized laser output device according to claim 1, it is characterized in that, polarizer surface is coated with polarization beam splitter, when laser beam incidence angle is at a certain angle incident to polarizer, in laser beam the light of p polarization state can be directly through polarizer and along straightline propagation, and the light of s polarization state can reflect.
3. linearly polarized laser output device according to claim 1, is characterized in that, the second total reflective mirror places perpendicular to the light that is polarized the s polarization state that device separates or the light of p polarization state is placed.
4. linearly polarized laser output device according to claim 1, is characterized in that, described the first total reflective mirror and the second total reflective mirror form laserresonator, and the second total reflective mirror is also used for residue laser reflection is returned to resonant cavity.
5. linearly polarized laser output device as claimed in claim 3, it is characterized in that, when total reflective mirror is placed perpendicular to the light of s polarization state, described power meter is for receiving the light of p polarization state, and total reflective mirror is when place perpendicular to the light of p polarization state, described power meter is for receiving the light of s polarization state.
6. linearly polarized laser output device as claimed in claim 2, is characterized in that, described certain angle is 56 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566040.8A CN103594919A (en) | 2013-11-14 | 2013-11-14 | Device capable of improving linear polarization laser output of solid laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310566040.8A CN103594919A (en) | 2013-11-14 | 2013-11-14 | Device capable of improving linear polarization laser output of solid laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140772A (en) * | 2015-09-30 | 2015-12-09 | 中国科学院合肥物质科学研究院 | Electro-optic Q-switch capable of completely compensating for laser thermal depolarization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106248A (en) * | 2006-07-14 | 2008-01-16 | 北京国科世纪激光技术有限公司 | A permeation rate adjustable laser |
| CN103217803A (en) * | 2013-04-09 | 2013-07-24 | 中国科学院半导体研究所 | Polarization coupling device for semi-conductor laser device adopting prism |
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2013
- 2013-11-14 CN CN201310566040.8A patent/CN103594919A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106248A (en) * | 2006-07-14 | 2008-01-16 | 北京国科世纪激光技术有限公司 | A permeation rate adjustable laser |
| CN103217803A (en) * | 2013-04-09 | 2013-07-24 | 中国科学院半导体研究所 | Polarization coupling device for semi-conductor laser device adopting prism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140772A (en) * | 2015-09-30 | 2015-12-09 | 中国科学院合肥物质科学研究院 | Electro-optic Q-switch capable of completely compensating for laser thermal depolarization |
| CN105140772B (en) * | 2015-09-30 | 2018-05-15 | 中国科学院合肥物质科学研究院 | A kind of electro-optical Q-switch that laser heat depolarization is fully compensated |
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Application publication date: 20140219 |