CN101242073B - A mini slice laser - Google Patents
A mini slice laser Download PDFInfo
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- CN101242073B CN101242073B CN2008100706207A CN200810070620A CN101242073B CN 101242073 B CN101242073 B CN 101242073B CN 2008100706207 A CN2008100706207 A CN 2008100706207A CN 200810070620 A CN200810070620 A CN 200810070620A CN 101242073 B CN101242073 B CN 101242073B
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- gain medium
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- slice laser
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Abstract
The present invention discloses a microchip laser which comprises a front and a back cavity pieces, a laser gain medium with uniform optical property, a double refraction crystal or frequency doubling crystal, the resonant cavity is composed, the positions of laser gain medium with uniform optical property and the double refraction crystal or frequency doubling crystal can be interchanged, wherein the light emergent end in the resonant cavity is arranged with a quarter-wave plate or three-quarter wave plate of the base frequency light, the light axis generates a 45-degree angle to the light axis of the double refraction crystal, leads to that the oscillating base frequency light base frequency light longitudinal mode splits to two longitudinal modes with polarization directions perpendicular with each other, and the line with polarization direction parallel or perpendicular with the light axis of the wave plate is polarized, the high-efficiency output can be obtained to form the microchip laser with fixed base wave polarization direction.
Description
Technical field the present invention relates to laser field, relate in particular to a kind of comprise single shaft laser crystal that each is placed along optical direction to the uniform gain medium of optical property such as optical axis and and relevant optical constitute micro-slice laser.
Background technology is in the laser that the laser gain material that adopts uniform dielectric constitutes; For obtaining frequency doubled light output in polarised light output or the greater efficiency resonant cavity; The normal polarizing components such as Brewster sheet, PBS prism that adopt place laser resonant cavity, and polarizing components such as Brewster sheet and PBS prism are difficult to be applied in the one piece micro-slice laser.
Summary of the invention the object of the invention provide a kind of one piece, cost is low, and the micro-slice laser that can adopt optical cement, in-depth optical cement, gluing method to be bonded to one.
The present invention realizes through following technical scheme: chamber sheet, the uniform gain medium of optical property, birefringece crystal before and after micro-slice laser comprises; Constitute resonant cavity; Wherein the light exit side in resonant cavity is provided with the quarter-wave plate or 3/4ths wave plates of fundamental frequency light, and the optical axis of its optical axis and birefringece crystal in angle of 45 degrees.
Between uniform gain medium of above-mentioned optical property and birefringece crystal, passive Q-adjusted crystal is set.
Chamber sheet, the uniform gain medium of optical property, frequency-doubling crystal before and after perhaps micro-slice laser comprises; Constitute resonant cavity; Wherein the exit end of light is provided with the quarter-wave plate or 3/4ths wave plates of fundamental frequency light in resonant cavity, and the optical axis of its optical axis and frequency-doubling crystal in angle of 45 degrees.
The position of uniform gain medium of above-mentioned optical property and frequency-doubling crystal is interchangeable.
Above-mentioned wave plate is the full-wave plate of frequency doubled light simultaneously.
Above-mentioned chamber, front and back sheet is ante-chamber plated film and back cavity plated film.
Between uniform gain medium of above-mentioned optical property and frequency-doubling crystal, passive Q-adjusted crystal is set.
The uniform gain medium of above-mentioned optical property is the single shaft laser crystal that optical axis is placed along optical direction.
The present invention adopts above technology; Adopt quarter-wave plate (or 3/4ths wave plates); Make that the fundamental frequency light longitudinal mode splitting of vibration is orthogonal two longitudinal modes in polarization direction; And its polarization direction and the parallel or vertical line polarisation of the optical axis of wave plate can obtain high efficiency output, to form the fixing micro-slice laser in first-harmonic polarization direction; Adopt the quarter-wave plate of two or more fundamental frequency light, can eliminate the effects of spatial between a plurality of longitudinal modes, when wave plate is the full-wave plate of frequency doubled light simultaneously, can obtain the frequency doubled light output of single polarization; Passive Q-adjusted crystal is set in the resonant cavity, can obtains the output of greater efficiency passive Q regulation pulse; The tool that sets up standard in the resonant cavity can effectively limit the longitudinal mode number of vibration in the resonant cavity, also can form single longitudinal mode.
Description of drawings combines accompanying drawing that the present invention is done further elaboration at present:
Fig. 1 is the structural representation of one of micro-slice laser of the present invention;
Fig. 2 is the structural representation that one of micro-slice laser of the present invention is provided with passive Q-adjusted crystal;
Fig. 3 is that the chamber sheet is the structural representation of ante-chamber plated film and back cavity plated film before and after one of micro-slice laser of the present invention;
Fig. 4 is two a structural representation of micro-slice laser of the present invention;
Fig. 5 is the structural representation that two of micro-slice laser of the present invention is provided with passive Q-adjusted crystal;
Fig. 6 is that chamber, the two front and back sheet of micro-slice laser of the present invention is the structural representation of ante-chamber plated film and back cavity plated film;
Fig. 7 is the set up standard structural representation of tool of micro-slice laser of the present invention.
Embodiment sees also Fig. 1, shown in 2 or 3; The uniform gain medium of chamber sheet 104,105 before and after the present invention includes, optical property 101, birefringece crystal 102; Constitute resonant cavity; Single shaft laser crystal such as Nd:YVO4 that the uniform gain medium 101 of optical property is placed along optical direction like Nd:YAG or optical axis, birefringece crystal 102 be thick wave plate such as pure YVO4, the position of uniform gain medium 101 of optical property and birefringece crystal 102 can exchange.The vertical optical direction of its optical axis, wherein the light exit side in resonant cavity is provided with the quarter-wave plate or 3/4ths wave plates 103 of fundamental frequency light, and its optical axis becomes 45 ° of angles with the optical axis of birefringece crystal 102.So fundamental frequency light is that the polarization direction is fixed on the line polarisation on the orthogonal both direction in the uniform gain medium 101 of optical property, constitutes the micro-slice laser that the first-harmonic polarization direction is confirmed, can obtain high efficiency output.
As shown in Figure 2; Between uniform gain medium 101 of above-mentioned optical property and birefringece crystal 102, passive Q-adjusted crystal 107 is set; Passive Q-adjusted crystal 107 is like isotropic body such as Cr:YAG; So fundamental frequency light is that the polarization direction is fixed on the line polarisation on the orthogonal both direction in the uniform gain medium 101 of optical property, can obtain the output of greater efficiency passive Q regulation pulse.
And for example shown in Figure 3, above-mentioned chamber, front and back sheet 104,105 can be ante-chamber plated film and back cavity plated film.
See also Fig. 4 again, shown in 5 or 6; The uniform gain medium of chamber sheet 104,105 before and after the present invention includes, optical property 101, frequency-doubling crystal 106; Constitute resonant cavity, uniform gain medium 101 of optical property as Nd:YAG or optical axis are along the single shaft laser crystal such as the Nd:YVO4 of optical direction placement, and frequency-doubling crystal 106 is like KTP; The vertical optical direction of its optical axis, the position of uniform gain medium 101 of optical property and frequency-doubling crystal 106 can exchange.Wherein the exit end of light is provided with the quarter-wave plate or 3/4ths wave plates 103 of fundamental frequency light in resonant cavity, and its optical axis becomes 45 ° of angles with the optical axis of frequency-doubling crystal 106.So fundamental frequency light is that the polarization direction is fixed on the line polarisation on the orthogonal both direction in the uniform gain medium 101 of optical property, can obtain the output of greater efficiency frequency doubled light.When wave plate is the full-wave plate of frequency doubled light simultaneously, then can obtain the frequency doubled light output of single polarization.
As shown in Figure 5; Between uniform gain medium 101 of above-mentioned optical property and frequency-doubling crystal 106, passive Q-adjusted crystal 107 is set; Passive Q-adjusted crystal 107 is like isotropic body such as Cr:YAG; So fundamental frequency light is that the polarization direction is fixed on the line polarisation on the orthogonal both direction in the uniform gain medium 101 of optical property, can obtain the output of greater efficiency passive Q regulation pulse.
And for example shown in Figure 6, above-mentioned chamber, front and back sheet 104,105 can be ante-chamber plated film and back cavity plated film.
See also shown in Figure 7 again; Tool 108 sets up standard in the resonant cavity of micro-slice laser; Etalon 108 is arranged between the uniform gain medium 101 of optical property and frequency-doubling crystal 106 or the birefringece crystal 102; Etalon 108 can effectively limit the longitudinal mode number of vibration in the resonant cavity for to utilize the etalon that is formed by refractive index difference between different elements, also can form single longitudinal mode.
In the above-mentioned various embodiment, in resonant cavity, insert the optical material that does not influence frequency doubled light and fundamental frequency light polarization performance, can strengthen heat radiation or cohesive force, can reach same effect.Can adopt optical cement, in-depth optical cement, gluing method to be bonded to one among the present invention in the resonant cavity between each optical element.
Claims (7)
1. micro-slice laser; Chamber sheet, the uniform gain medium of optical property, birefringece crystal before and after comprising; Constitute resonant cavity, the position of uniform gain medium of optical property and birefringece crystal is interchangeable, it is characterized in that: the light exit side in resonant cavity is provided with the quarter-wave plate or 3/4ths wave plates of fundamental frequency light; The optical axis of its optical axis and birefringece crystal in angle of 45 degrees; The fundamental frequency light longitudinal mode splitting of vibration is orthogonal two longitudinal modes in polarization direction, and its polarization direction and the parallel or vertical line polarisation of the optical axis of wave plate, forms the fixing micro-slice laser in first-harmonic polarization direction.
2. a kind of micro-slice laser according to claim 1 is characterized in that: between uniform gain medium of optical property and birefringece crystal, passive Q-adjusted crystal is set.
3. a kind of micro-slice laser according to claim 1 and 2 is characterized in that: chamber sheet is ante-chamber plated film and back cavity plated film before and after it.
4. a kind of micro-slice laser according to claim 1 and 2 is characterized in that: its wave plate is more than two or two.
5. a kind of micro-slice laser according to claim 1 and 2 is characterized in that: the uniform gain medium of its optical property is the single shaft laser crystal that optical axis is placed along optical direction.
6. a kind of micro-slice laser according to claim 1 is characterized in that: tool sets up standard between the uniform gain medium of optical property and frequency-doubling crystal or birefringece crystal.
7. a kind of micro-slice laser according to claim 1 and 2 is characterized in that: adopt the optical cement gummed to be bonded to one in its resonant cavity between each optical element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100706207A CN101242073B (en) | 2008-02-04 | 2008-02-04 | A mini slice laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100706207A CN101242073B (en) | 2008-02-04 | 2008-02-04 | A mini slice laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101242073A CN101242073A (en) | 2008-08-13 |
| CN101242073B true CN101242073B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100706207A Expired - Fee Related CN101242073B (en) | 2008-02-04 | 2008-02-04 | A mini slice laser |
Country Status (1)
| Country | Link |
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| CN (1) | CN101242073B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104852263A (en) * | 2015-05-29 | 2015-08-19 | 福建福晶科技股份有限公司 | Composite gain passive modulation microchip laser |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5091912A (en) * | 1990-02-13 | 1992-02-25 | Societe D'applications Generales D'electricite Et De Mecanique Sagem | Laser having two modes at different frequencies |
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2008
- 2008-02-04 CN CN2008100706207A patent/CN101242073B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5091912A (en) * | 1990-02-13 | 1992-02-25 | Societe D'applications Generales D'electricite Et De Mecanique Sagem | Laser having two modes at different frequencies |
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| CN101242073A (en) | 2008-08-13 |
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Granted publication date: 20120530 Termination date: 20180204 |