CN210379757U - Tunable purple light pulse laser - Google Patents
Tunable purple light pulse laser Download PDFInfo
- Publication number
- CN210379757U CN210379757U CN201920768583.0U CN201920768583U CN210379757U CN 210379757 U CN210379757 U CN 210379757U CN 201920768583 U CN201920768583 U CN 201920768583U CN 210379757 U CN210379757 U CN 210379757U
- Authority
- CN
- China
- Prior art keywords
- laser
- light
- mirror
- resonant cavity
- tunable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000013078 crystal Substances 0.000 claims abstract description 41
- 230000010287 polarization Effects 0.000 claims abstract description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 14
- 239000010936 titanium Substances 0.000 claims abstract description 14
- 238000002310 reflectometry Methods 0.000 claims abstract description 13
- 239000010437 gem Substances 0.000 claims abstract description 9
- 229910001751 gemstone Inorganic materials 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 229910052594 sapphire Inorganic materials 0.000 claims abstract description 5
- 239000010980 sapphire Substances 0.000 claims abstract description 5
- 244000172533 Viola sororia Species 0.000 claims description 12
- 235000005811 Viola adunca Nutrition 0.000 claims description 6
- 240000009038 Viola odorata Species 0.000 claims description 6
- 235000013487 Viola odorata Nutrition 0.000 claims description 6
- 235000002254 Viola papilionacea Nutrition 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 3
- 238000010330 laser marking Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Landscapes
- Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The utility model relates to a tunable purple light laser, its characterized in that: inserting a nonlinear crystal between a second planoconvex mirror and a third planoconvex mirror which form a laser resonant cavity; a pump laser source is focused into the titanium sapphire crystal through a focusing system to generate fundamental frequency light to oscillate in a resonant cavity; is output outside the cavity through the output mirror; the tuning of the output wavelength is realized by adjusting the angle; the pump laser source adopts a 532nm pulse laser with high beam quality, and the polarization direction is horizontal polarization; cutting the titanium gem crystal by adopting a Brewster angle; the laser resonant cavity is provided with two optical arms to form a V-shaped cavity; the nonlinear crystal adopts BBO crystal, the lens in the laser resonant cavity has high reflectivity of broadband to fundamental frequency light and frequency doubling light, the reflectivity of 99.9% is provided in the reflection band, and the output lens has 99.9% transmissivity to the frequency doubling light. The continuous adjustment of the wavelength of the violet laser can be realized by using a simple structure.
Description
Technical Field
The utility model relates to a tunable purple light pulse laser, which belongs to an all-solid-state pulse laser.
Background
Most of the existing violet lasers are semiconductor lasers, but because the semiconductor lasers have the limitations of large divergence angle, small power, incapability of realizing high-peak pulse operation and the like, the defects can be overcome by adopting all-solid-state lasers of semiconductor pumping. The full solid-state laser realizes purple light output and can utilize the nonlinear effect of the crystal, such as frequency doubling or frequency combination effect. The titanium gem crystal has a red light fluorescence spectrum of 750 nm-850 nm, and purple light output can be realized if frequency doubling is carried out on fundamental frequency light. At present, there are some reports on frequency doubling of titanium gem laser at home and abroad, which realizes single-wavelength 399nm violet light output by frequency doubling through LBO crystal (Marco Pizzocaro, Davide Calonico, et al. "Efficient frequency doubling at 399 nm" APPLID OPTICS, 53 (16): 3388-.
Disclosure of Invention
The utility model aims at providing a tunable purple light pulse laser which can realize the operation of purple laser with high repetition frequency, high peak power and adjustable wavelength; the laser marking device can be widely applied to laser marking, spectral analysis and laser ranging. Can generate all-solid-state violet laser with high average power, adjustable wavelength and good stability.
The technical scheme of the invention is realized as follows: a tunable purple light pulse laser comprises a pump laser source, a focusing system, a titanium gem crystal, a laser resonant cavity and a nonlinear crystal; the method is characterized in that: inserting a nonlinear crystal between a second planoconvex mirror and a third planoconvex mirror which form a laser resonant cavity; a pump laser source is focused into the titanium sapphire crystal through a focusing system to generate fundamental frequency light to oscillate in a resonant cavity; the nonlinear crystal performs frequency doubling on the fundamental frequency light to generate blue-violet frequency doubling light, and the blue-violet frequency doubling light is output out of the cavity through the output mirror; the tuning of the output wavelength is realized by adjusting the angle; the pump laser source adopts a 532nm pulse laser with high beam quality, and the polarization direction is horizontal polarization; cutting the titanium gem crystal by adopting a Brewster angle; the laser resonant cavity is provided with two optical arms to form a V-shaped cavity; the nonlinear crystal adopts BBO crystal, realizes frequency doubling of fundamental frequency light and simultaneously achieves the purpose of wavelength tuning. The ultraviolet laser is in a high repetition frequency and high peak power pulse running mode; the first plane mirror and the third plane mirror in the laser resonant cavity have high reflectivity of broadband for fundamental frequency light and frequency doubling light, reflectivity of 99.9% is provided in a reflection band, and the output lens has 99.9% of transmissivity for the frequency doubling light.
The resonant cavity is a V-shaped resonant cavity.
The wavelength of the pump light source is 532nm, the operation mode is pulse operation, the polarization direction is horizontal polarization, and the beam quality factor M2Close to 1.
And the pump light source is focused into the laser gain medium after passing through the collimation focusing system.
The third plane mirror in the laser resonant cavity is a reflective cavity mirror, and has 99.9% broadband reflectivity for fundamental frequency light and frequency doubling light.
The second concave mirror of the frequency doubling light output mirror has 99.9% of transmittance for frequency doubling light.
The nonlinear crystal realizes wavelength tuning by adopting BBO angle tuning.
The optical collimating and focusing system of the V-shaped resonant cavity is formed by a group of lenses which have collimating and focusing functions and realizes the coupling of pump light focusing to a laser gain medium.
The positive effect of the utility model is to adopt the V-shaped resonant cavity structure. The optical collimation focusing system is formed by a group of lenses with collimation and focusing functions, and realizes the coupling of pump light focusing to a laser gain medium. The end face of the laser gain medium adopts a Brewster angle cutting mode, and the two sides of the laser gain medium are plated with anti-reflection films of pump light and fundamental frequency light. The curvature radius of the output coupling cavity mirror can be R100 and R200, and the curvature radius of the reflecting cavity mirror can be R200 and a plane mirror. The reflecting cavity mirror is plated with a high-reflection film with 99.9% reflectivity for two fundamental frequency light frequency doubling light, the output coupling cavity mirror is plated with a high-reflection film with 99.9% reflectivity for the fundamental frequency light, and a high-transmission film with 99.9% transmissivity for the frequency doubling light.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a 400nm laser spectrum.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, as shown in fig. 1, a tunable violet pulse laser includes a pump laser source 1, a focusing system 2, a titanium sapphire crystal 4, a laser resonant cavity, and a nonlinear crystal 6; the method is characterized in that: a nonlinear crystal 6 is inserted between a second plano-concave mirror 5 and a third plano-mirror 7 which constitute a laser resonator; a pump laser source 1 is focused into a titanium sapphire crystal 4 through a focusing system 2 to generate fundamental frequency light to oscillate in a resonant cavity; the nonlinear crystal 6 performs frequency doubling on the fundamental frequency light to generate blue-violet frequency doubling light, and the blue-violet frequency doubling light is output out of the cavity through the output mirror; the tuning of the output wavelength is realized by adjusting the angle; the pump laser source 1 adopts a 532nm pulse laser with high beam quality, and the polarization direction is horizontal polarization; the titanium gem crystal 6 is cut by adopting a Brewster angle; the laser resonant cavity is provided with two optical arms to form a V-shaped cavity; the nonlinear crystal 6 adopts BBO crystal to realize frequency doubling of the fundamental frequency light and achieve the purpose of wavelength tuning. The ultraviolet laser is in a high repetition frequency and high peak power pulse running mode; the first plane mirror 3 and the third plane mirror 7 in the laser resonant cavity have high reflectivity of broadband for fundamental frequency light and frequency doubling light, reflectivity of 99.9% is provided in a reflection band, and the output lens has 99.9% transmissivity for the frequency doubling light.
The resonant cavity is a V-shaped resonant cavity.
The wavelength of the pump light source 1 is 532nm, the operation mode is pulse operation, the polarization direction is horizontal polarization, and the beam quality factor M2Close to 1.
The pump light source 1 is focused into the laser gain medium after passing through the collimation focusing system 2.
The third plane mirror 7 in the laser resonant cavity is a reflective cavity mirror with 99.9% broadband reflectivity for fundamental frequency light and frequency doubling light.
The frequency doubling light output mirror second concave mirror 5 has 99.9% of transmissivity on frequency doubling light.
The nonlinear crystal 6 realizes wavelength tuning by adopting BBO angle tuning.
The optical collimating and focusing system of the V-shaped resonant cavity is formed by a group of lenses which have collimating and focusing functions and realizes the coupling of pump light focusing to a laser gain medium.
The pump laser source 1 shown in fig. 1 employs a 532nm pulse laser with high beam quality and a beam quality factor M2 of 1.02, and the polarization direction is horizontal polarization; the average pumping power is 8.5W, the pulse width is 16ns, and the pulse frequency is 50 kHz; the laser gain medium is a titanium gem crystal 4, is cut by adopting a Brewster angle, has the size of 4mm multiplied by 20mm, and is double-sided plated with 532/750-850nm anti-reflection films. The first plane mirror 3 lens of the resonant cavity is a plane total reflection mirror with the size phi of 20mm multiplied by 2mm, a double-sided 532 anti-reflection film is plated, and simultaneously a 750-plus-850 nm/380-plus-420-nm broadband high-reflection film is plated. The third plane mirror 7 of the reflection cavity is a plane mirror, and is plated with a high-reflection film with the size phi of 20mm multiplied by 4mm and the size of 850nm/380 and 420 nm; the second plano-concave mirror 5 of the output mirror is a plano-concave mirror, the curvature radius R =100mm, a high reflection film with the thickness of 750 and 850nm and a high transmission film with the thickness of 380 and 420nm, and the size phi is 20mm multiplied by 4 mm; the nonlinear crystal adopts a BBO crystal matched with class I critical positions, and the size of the nonlinear crystal is 3mm multiplied by 5 mm. By adjusting the angles of the laser resonant cavity mirror and the BBO crystal, the laser wavelength under the maximum power is 400.203nm, and by finely adjusting the angle of the BBO crystal, the continuous adjustment of the laser output wavelength can be realized. The corresponding power at different output wavelengths may differ.
FIG. 2 shows the spectrum of 400.203nm laser.
Claims (8)
1. A tunable purple light pulse laser comprises a pump laser source, a focusing system, a titanium gem crystal, a laser resonant cavity and a nonlinear crystal; the method is characterized in that: inserting a nonlinear crystal between a second planoconvex mirror and a third planoconvex mirror which form a laser resonant cavity; a pump laser source is focused into the titanium sapphire crystal through a focusing system to generate fundamental frequency light to oscillate in a resonant cavity; the nonlinear crystal performs frequency doubling on the fundamental frequency light to generate blue-violet frequency doubling light, and the blue-violet frequency doubling light is output out of the cavity through the output mirror; the tuning of the output wavelength is realized by adjusting the angle; the pump laser source adopts a 532nm pulse laser with high beam quality, and the polarization direction is horizontal polarization; cutting the titanium gem crystal by adopting a Brewster angle; the laser resonant cavity is provided with two optical arms to form a V-shaped cavity; the nonlinear crystal adopts BBO crystal, and the violet laser is in high repetition frequency and high peak power pulse operation mode; the first plane mirror and the third plane mirror in the laser resonant cavity have high reflectivity of broadband for fundamental frequency light and frequency doubling light, reflectivity of 99.9% is provided in a reflection band, and the output mirror has 99.9% of transmissivity for the frequency doubling light.
2. The tunable violet pulse laser of claim 1 wherein said resonant cavity is a V-cavity.
3. The tunable violet pulse laser of claim 1, wherein the pump laser source has a wavelength of 532nm, the operation mode is pulsed operation, the polarization direction is horizontal polarization, and the beam quality factor M is2Close to 1.
4. The tunable violet pulse laser of claim 1, wherein the pump laser source is focused into the laser gain medium after passing through the collimating and focusing system.
5. The tunable violet pulse laser of claim 1 wherein the third plane mirror of the laser resonator is a mirror with a reflectivity of 99.9% for the fundamental and doubled frequency light.
6. The tunable violet pulse laser of claim 1 wherein the output mirror second concave mirror has a 99.9% transmission of the frequency doubled light.
7. The tunable violet pulse laser of claim 1, wherein the nonlinear crystal is wavelength tuned using BBO angle tuning.
8. The tunable violet pulse laser of claim 1, wherein the optical collimating and focusing system of the resonant cavity comprises a set of lenses for collimating and focusing, so as to couple the pump light to the laser gain medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920768583.0U CN210379757U (en) | 2019-05-27 | 2019-05-27 | Tunable purple light pulse laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920768583.0U CN210379757U (en) | 2019-05-27 | 2019-05-27 | Tunable purple light pulse laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210379757U true CN210379757U (en) | 2020-04-21 |
Family
ID=70261767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920768583.0U Expired - Fee Related CN210379757U (en) | 2019-05-27 | 2019-05-27 | Tunable purple light pulse laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210379757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142329A (en) * | 2021-12-01 | 2022-03-04 | 中国科学院理化技术研究所 | Narrow-linewidth ultraviolet laser |
-
2019
- 2019-05-27 CN CN201920768583.0U patent/CN210379757U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114142329A (en) * | 2021-12-01 | 2022-03-04 | 中国科学院理化技术研究所 | Narrow-linewidth ultraviolet laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100499297C (en) | Method for generating third harmonic laser | |
| CN105226491B (en) | Selenium-gallium-barium optical parametric oscillator of 3-micron waveband solid laser pumping | |
| CN103545706B (en) | A kind of all solid state 355nm lasers | |
| CN107658687B (en) | Self-starting femtosecond titanium gem laser oscillator of synchronous pump | |
| CN101483317A (en) | Pump mode for semiconductor laser | |
| CN210379757U (en) | Tunable purple light pulse laser | |
| CN211879768U (en) | Dual-wavelength pumping ultraviolet laser generating device | |
| CN101436752A (en) | End-face pump green light laser capable of regulating Q cavity external frequency multiplication actively | |
| CN210007100U (en) | kinds of optical parametric oscillator | |
| CN107946891B (en) | A kind of high-power ultraviolet solid-state laser | |
| CN102842842A (en) | High-power narrow-linewidth 1.94mum Tm: YLF (Yttrium Lithium Fluoride) laser | |
| CN110120622A (en) | A kind of 10 femtosecond Ti:Sapphire oscillator of the Asia that laser diode directly pumps | |
| CN213602178U (en) | Parameter oscillation optical system | |
| CN102185237B (en) | High-power and 1,319 nm single-wavelength continuous laser device | |
| CN113872030A (en) | 266nm pulse solid laser | |
| CN101132106A (en) | Intracavity sum-frequency mixing full-solid blue laser device for obtaining wavelength of 488nm | |
| CN205303940U (en) | Full solid laser of 558nm wavelength single -frequency output | |
| CN114597758A (en) | Active Q-adjusting internal cavity type Nd-YAG ceramic/BaWO4Dual-wavelength Raman laser | |
| CN113346343A (en) | Intracavity cascade harmonic conversion tunable laser | |
| CN1243399C (en) | Ring laser device | |
| CN101710666A (en) | Semiconductor laser pump single longitudinal mould and frequency laser | |
| RU2300834C2 (en) | Compact continuous solid-state fcd laser (alternatives) | |
| CN1050234C (en) | Compound cavity modulating light parameter oscillator | |
| CN216390021U (en) | 266nm pulse solid laser | |
| CN220934586U (en) | Two-stage amplified mid-infrared femtosecond laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200421 |