CN2829156Y - Four-frequency-multiplication laser - Google Patents
Four-frequency-multiplication laser Download PDFInfo
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- CN2829156Y CN2829156Y CN 200520073932 CN200520073932U CN2829156Y CN 2829156 Y CN2829156 Y CN 2829156Y CN 200520073932 CN200520073932 CN 200520073932 CN 200520073932 U CN200520073932 U CN 200520073932U CN 2829156 Y CN2829156 Y CN 2829156Y
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- frequency
- quadruple
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- light
- doubling
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Abstract
The utility model discloses a quadruple frequency laser device which comprises three laser cavity lenses, a laser gain medium, a double frequency crystal body and a quadruple frequency crystal body, wherein the double frequency crystal body and the quadruple frequency crystal body are first class frequency doubling crystal bodies; the three laser cavity lenses form two cavity resonators. Pump light is focused on the laser gain medium through the laser cavity lenses. Fundamental frequency light generated by excitation oscillates in the first cavity resonator. The frequency doubling light is generated by the double frequency crystal body. A combination prism arranged between the laser gain medium and the double frequency crystal body refracts frequency doubling light to the other cavity resonator. Moreover, quadruple frequency light is generated through the quadruple frequency crystal body and is emitted. Thus, the polarization control can be effectively carried out by applying the combination prism which can be used for separating the fundamental frequency light from the frequency doubling light or the frequency doubling light from the quadruple frequency light. The frequency doubling light can be reflected to the other cavity by using the polarization total reflection. The quadruple frequency light which is generated through a secondary frequency doubling is directly outputted. The damage of elements arranged in the cavity is avoided, and the service life is extended. The color dispersion can be compensated by designing the symmetrical structure of the prism.
Description
Technical field
The utility model relates to the laser of quadruple device, relates in particular to a kind of laser of quadruple device that two resonant cavitys are arranged.
Background technology
The laser of quadruple device can be realized shortwave output easily in the chamber, expands the range of application of laser.For lasers such as intracavity frequency doubling, frequency tripling, quadruples, all having some technical schemes realizes, normally realize the high-order frequency multiplication of laser cavity by plated film, but corresponding rete is made difficult, and rete is difficult to reflect fully frequency tripling or quadruple frequency light, make its not return laser light chamber, like this, the high-order frequency doubled light will cause damage to element in the laser cavity.
Summary of the invention
The utility model purpose provides a kind of frequency doubled light, four frequency light of making and produces respectively, avoids the laser of quadruple device of element damage in the chamber effectively.
The utility model is achieved through the following technical solutions: it comprises three laser mirrors, gain medium, two frequency-doubling crystals and quadruple frequency crystal, two frequency-doubling crystals and quadruple frequency crystal are I class frequency-doubling crystal, three laser mirrors are formed two resonant cavitys, pump light focuses on the gain medium by laser mirror, excite the fundamental frequency light of generation in first resonant cavity, to vibrate, produce frequency doubled light by two frequency-doubling crystals, combined prism is located between gain medium and two frequency-doubling crystals, refrative frequency doubling light is to another resonant cavity, producing quadruple frequency light by quadruple frequency crystal penetrates, this combined prism is made up of three optical axis directions birefringece crystal of the same race at grade, there is certain included angle in the optical axis of the optical axis of middle crystal and the crystal on both sides, by the O transmittance of combined prism, e light total reflection.
The utility model adopts above structure, the application combination prism can carry out Polarization Control effectively, be used for separating fundamental frequency light and frequency doubled light or frequency doubled light and quadruple frequency light, utilize the polarization total reflection that frequency doubled light is reflexed in another chamber, directly output after frequency multiplication produces four frequency light once more, avoided damage of elements in the chamber, increased the service life, and can compensation of dispersion by the symmetrical structure of design prism.Above structure can be used on continuously and in the pulse laser, is fit to various laser pumping forms, is specially adapted to semiconductor pumped laser.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the structural representation of one of combined prism;
Fig. 2 is two a structural representation of combined prism;
Fig. 3 is the optical texture schematic diagram of the utility model embodiment one;
Fig. 4 is the optical texture schematic diagram of the utility model embodiment two;
Fig. 5 is the optical texture schematic diagram of the utility model embodiment three.
Embodiment
As shown in Figure 1, 2, combined prism 5 is made up of three blocks of birefringece crystals 51,52,53 of the same race, the optical axis direction of each assembly at grade, when guaranteeing O light by combined prism, the direction of propagation is constant; But there is certain included angle in the optical axis of the optical axis of middle crystal 52 and the crystal 51,53 on both sides, and like this, e light can all be reflected.For the enhancing reflection, transmission can be at the plane of crystal plated film.
As shown in Figure 3, the laser of quadruple device comprises three laser mirrors 11,12,13, gain medium 2 and two frequency-doubling crystals 3, quadruple frequency crystal 4, laser mirror 11,12 is formed a resonant cavity, laser mirror 11,13 is formed a resonant cavity, and combined prism 5 is located between gain media 2 and two frequency-doubling crystals 3, the quadruple frequency crystal 4. Laser mirror 11,12,13 can be concave mirror or level crossing, can also form by the plane of crystal plated film; Gain medium 2 can be crystal such as YAG, YVO4, YLF; Two frequency-doubling crystals 3 and quadruple frequency crystal 4 can be I class frequency-doubling crystals such as BBO, LBO or BIBO.11 pairs of pump lights of laser mirror are anti-reflection, high anti-to fundamental frequency light, pump light focuses on the gain medium 2 by laser mirror 11, excite the fundamental frequency light of generation between laser mirror 11 and 12, to vibrate, produce frequency doubled light by two frequency-doubling crystals 3, and the frequency multiplication polarisation of light changes, like this, when frequency doubled light passes through combined prism 5, because polarization total reflection, frequency doubled light is refracted in another resonant cavity, once more through four class frequency-doubling crystals 4, produces quadruple frequency light, quadruple frequency light is by laser mirror 13 outgoing, oppositely quadruple frequency light then is transmitted to outside the chamber by combined prism 5, prevents it to damage of elements in the chamber, and perhaps go out from combined prism 5 transmissions together with reverse frequency doubled light the forward quadruple frequency light chamber mirror 13 reflection backs of being plated reflectance coating.
As shown in Figure 4, when two frequency-doubling crystals 3, quadruple frequency crystal 4 one or both of are II class frequency-doubling crystal such as KTP, BBO, should correspondingly insert wave plate in its front.When two frequency-doubling crystals 3 are II class frequency-doubling crystal, should between two frequency-doubling crystals 3 and combined prism 5, insert fundamental frequency light is full-wave plate, is the wave plate 6 of 1/2 wave plate to frequency doubled light, when quadruple frequency crystal 4 is II class frequency-doubling crystal, should between quadruple frequency crystal 4 and combined prism 5, inserts two frequency doubled lights are full-wave plate, are the wave plate 7 of 1/2 wave plate to quadruple frequency light.Two frequency-doubling crystals 3, quadruple frequency crystal 4 are 45 ° of angles with the optical axis of crystal of gain medium 2, and the optical axis of the optical axis of wave plate 6,7 and two frequency-doubling crystals 3, quadruple frequency crystal 4 is 22.5 ° of angles, makes fundamental frequency light directly shine outside the chamber through twice frequency multiplication like this.
The utility model as shown in Figure 5 also can directly adopt the mode at the surface coating of gain medium, two frequency-doubling crystals and quadruple frequency crystal crystal, replaces the structure of laser mirror, can be used for micro-slice laser.
In the utility model structure, can also insert other elements such as Q switched element, etalon, to satisfy corresponding requirement.
Claims (8)
1, the laser of quadruple device, comprise three laser mirrors, gain medium, two frequency-doubling crystals and quadruple frequency crystal, three laser mirrors are formed two resonant cavitys, pump light focuses on the gain medium by laser mirror, excite the fundamental frequency light of generation in first resonant cavity, to vibrate, produce frequency doubled light by two frequency-doubling crystals, it is characterized in that: two frequency-doubling crystals and quadruple frequency crystal are I class frequency-doubling crystal, combined prism is located between gain medium and two frequency-doubling crystals, refrative frequency doubling light is to another resonant cavity, producing quadruple frequency light by quadruple frequency crystal penetrates, this combined prism is made up of three optical axis directions birefringece crystal of the same race at grade, there is certain included angle in the optical axis of the optical axis of middle crystal and the crystal on both sides, by the O transmittance of combined prism, e light total reflection.
2, laser of quadruple device according to claim 1, it is characterized in that: this two frequency-doubling crystal is an II class frequency-doubling crystal, between two frequency-doubling crystals and combined prism, insert fundamental frequency light is full-wave plate, is the wave plate of 1/2 wave plate to frequency doubled light, by the fundamental frequency light total transmissivity of combined prism, frequency doubled light total reflection.
3, laser of quadruple device according to claim 1, it is characterized in that: this quadruple frequency crystal is an II class frequency-doubling crystal, at quadruple frequency crystal and combined prism insertion two frequency doubled lights are full-wave plate, are the wave plate of 1/2 wave plate to quadruple frequency light, by two frequency doubled light total reflections of combined prism, quadruple frequency light total transmissivity.
4, laser of quadruple device according to claim 1, it is characterized in that: this two frequency-doubling crystal and quadruple frequency crystal are II class frequency-doubling crystal, between two frequency-doubling crystals and combined prism, insert fundamental frequency light is full-wave plate, is the wave plate of 1/2 wave plate to frequency doubled light, two frequency doubled lights are full-wave plate, are the wave plate of 1/2 wave plate to quadruple frequency light in quadruple frequency crystal and combined prism insertion.
5, according to the described laser of quadruple device of one of claim 1 to 4, it is characterized in that: this gain medium is YAG, YVO4 or YLF crystal.
6, according to the described laser of quadruple device of one of claim 1 to 3, it is characterized in that: this I class frequency-doubling crystal is BBO, LBO or BIBO crystal.
7, according to the described laser of quadruple device of one of claim 2 to 4, it is characterized in that: this II class frequency-doubling crystal is KTP or bbo crystal.
8, according to the described laser of quadruple device of one of claim 1 to 4, it is characterized in that: save the laser mirror element, at the exit end surface coating of incident end, two frequency-doubling crystals and the quadruple frequency crystal crystal of gain medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073932 CN2829156Y (en) | 2005-07-22 | 2005-07-22 | Four-frequency-multiplication laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073932 CN2829156Y (en) | 2005-07-22 | 2005-07-22 | Four-frequency-multiplication laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2829156Y true CN2829156Y (en) | 2006-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073932 Expired - Fee Related CN2829156Y (en) | 2005-07-22 | 2005-07-22 | Four-frequency-multiplication laser |
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| CN (1) | CN2829156Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069394A (en) * | 2017-02-10 | 2017-08-18 | 温州大学 | A kind of four-time harmonic laser generator |
| CN112636153A (en) * | 2020-12-04 | 2021-04-09 | 武汉安扬激光技术有限责任公司 | Ultraviolet femtosecond laser |
| CN113258427A (en) * | 2020-02-10 | 2021-08-13 | 北京科益虹源光电技术有限公司 | 213nm ultraviolet light output method and system |
| CN113258426A (en) * | 2020-02-10 | 2021-08-13 | 北京科益虹源光电技术有限公司 | 213nm laser |
-
2005
- 2005-07-22 CN CN 200520073932 patent/CN2829156Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069394A (en) * | 2017-02-10 | 2017-08-18 | 温州大学 | A kind of four-time harmonic laser generator |
| CN113258427A (en) * | 2020-02-10 | 2021-08-13 | 北京科益虹源光电技术有限公司 | 213nm ultraviolet light output method and system |
| CN113258426A (en) * | 2020-02-10 | 2021-08-13 | 北京科益虹源光电技术有限公司 | 213nm laser |
| CN112636153A (en) * | 2020-12-04 | 2021-04-09 | 武汉安扬激光技术有限责任公司 | Ultraviolet femtosecond laser |
| CN112636153B (en) * | 2020-12-04 | 2021-11-05 | 武汉安扬激光技术股份有限公司 | Ultraviolet femtosecond laser |
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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: 20061018 Termination date: 20090824 |