CN1658450A - Internal cavity electrically controlled wavelength code output method and biwavelength laser module thereof - Google Patents
Internal cavity electrically controlled wavelength code output method and biwavelength laser module thereof Download PDFInfo
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Abstract
This invention is an output method of coding of internal-cavity electric laser wave length and its double wave length laser module, and belongs to the field of non-linear optical laser technology. This invention makes use that the strong selection of the non-linear crystal to the polarization state, uses 1/2 wave voltage added on the optical crystal to switch the polarization state of the outputting laser, in order to use the polarization prismatic components to control the transmission direction of the front laser, and make the laser surge of certain polarization direction not pass through non-linear crystal and output the first wave length directly; and make another laser surge of pass through non-linear crystal and output the second wave length. Because the electric and optical crystal can realize high frequency confection, so it can achieve the fast switching speed of the wave length and the switching is very simple. It can precisely assure the laser of two wave lengths to output through the same optical path and easily achieve high output efficiency and realize wave length coding output. The structure of this invention is reliable, and the cost is low.
Description
Technical field
The present invention relates to the automatically controlled optical maser wavelength code input method of intracavity and this kind dual-wavelength laser device module, belong to nonlinear optics laser technique field.
Background technology
Optical parametric oscillator is as working media with nonlinear crystal, place the optical parameter resonant cavity, be beneficial to the nonlinear effect in the crystal, the linear polarization pump energy that will meet matching condition is converted to parametric oscillation flashlight and ideler frequency light, the optical parameter resonant cavity makes flashlight come and go vibration and obtains gain, and forms the laser output of specific wavelength; Nonlinear crystal cuts little ice to the linear polarization pump light that does not meet matching condition simultaneously.
Laser freuqency doubling is to utilize light laser to realize by the second harmonic that nonlinear crystal produces.The linearly polarized light energy that meets matching condition will be converted to frequency doubled light; Nonlinear crystal will cut little ice to the linearly polarized light that does not meet matching condition simultaneously.
Electrooptic crystal is by putting on the voltage on the crystal, and the birefringence state that changes crystal changes the input polarization polarized state of light then.Usually is uniaxial crystal under the electrooptic crystal nature, applies the polarization direction half-twist that electrooptic crystal behind 1/2 wave voltage will change into biaxial crystal and make the incoming line polarised light.
Laser photoelectricity antagonism an urgent demand optical maser wavelength can be carried out Wavelength-encoding and be switched as the antagonism of microwave frequency hopping.But dual laser in the past or two kinds of long wavelength lasers are vibrated simultaneously, and can't only select certain wavelength output (for example notification number is 2269003,2363405,1091316 patent); Be in light path, to insert, shift out a part of optical element, perhaps make laser enter different passages and switch output wavelength with mechanical method deflection mirror with the method for machinery.The wavelength switch speed is slow, the mechanical positioning difficulty, and poor reliability, performance index are difficult to reach higher level, can not adapt to the requirement of weaponry adverse circumstances.(for example publication number is 1464602,1209669,1285636,1459894,1459895,1459896 patent).China's utility model patent (notification number: 2362210) disclose a kind of " double wavelength and double pulse laser device " with prism beam splitter, it is with prism chromatic dispersion beam split, add the scheme of dispersing prism, Q switching crystal and completely reflecting mirror after the beam split on two kinds of wavelength light path separately, its wavelength conversion speed ratio is very fast, but difficulty is bigger on its optical arrangement, two kinds of wavelength of output all must be within the tuning range of laser medium, and the wavelength difference is less.
In sum, all existing researchs and patent all do not relate to or are hinting the switching that utilizes output laser polarization state, and then change the method for laser output wavelength.
Summary of the invention
At the deficiencies in the prior art and defective, the objective of the invention is to utilize the strong selectivity of nonlinear crystal to polarization state, automatically controlled optical maser wavelength code input method of a kind of intracavity and dual laser module thereof are provided, making it have wavelength switches simple, can guarantee accurately that the laser of two kinds of wavelength exports with light path, and reach higher output performance index easily, reliable in structure, the advantage that manufacturing cost is lower.
Technical scheme of the present invention is as follows:
The invention provides the automatically controlled optical maser wavelength code input method of a kind of intracavity, it is characterized in that this method comprises the steps:
1) with the electrooptic modulation crystal that is arranged in the laserresonator, laser nonlinear frequency transformation device and be used to guarantee pump light two directional pump laser nonlinear frequency transformation device and make dual-wavelength laser replace the outgoing mirror of front end of line polarization Q impulse solid state laser with optical axis output and one group of optics control element containing the polarization spectro element; Wherein said laser nonlinear frequency transformation device is made up of optical parametric oscillation outgoing mirror, nonlinear crystal and optical parametric oscillation total reflective mirror or is made up of nonlinear crystal and optical parametric oscillation total reflective mirror;
2) when not applying control voltage on the electrooptic crystal, utilize the polarization spectro element, make a kind of obstructed too drastic optical nonlinear frequency-transposition arrangement of laserresonator of polarization state, keep the wavelength output that front end is transferred Q polarized pulses laser, make its output the wavelength;
3) when applying 1/2 λ voltage on the electrooptic crystal, make the laser polarization state half-twist that allows vibration in the laserresonator, with do not apply the polarization state orthogonal of control during voltage on the electrooptic crystal, utilize the polarization spectro element, control laserresonator at this moment is by laser nonlinear frequency transformation device, become the pump light of laser nonlinear frequency transformation device, it is second kind of output wavelength that laser nonlinear frequency transformation device makes its nonlinear transformation.
The present invention can be according to the waveform that puts on the voltage on the electrooptic crystal, and its final output wavelength is a kind of wavelength in the dual wavelength, or two kinds of wavelength alternate coded outputs.Second wavelength being exported can be the frequency multiplication wavelength of first wavelength, the optical parametric oscillation wavelength of degeneracy or single resonance.
According to said method provided by the invention, the invention provides the dual laser module of the described method of following several realizations:
The first kind of automatically controlled laser dual laser of intracavity module provided by the invention, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in the laserresonator of front end of line polarization Q impulse solid state laser, set gradually an electrooptic modulation crystal and polarization splitting prism; On the reflected light path of polarization splitting prism, set gradually by optical parametric oscillation outgoing mirror, nonlinear crystal and optical parametric oscillation total reflective mirror; Quarter wave plate and total reflective mirror are set in the transmitted light path of polarization splitting prism; On its emitting light path, be provided with laser output mirror; Described optical parametric oscillation outgoing mirror, nonlinear crystal and optical parametric oscillation total reflective mirror are formed laser nonlinear frequency transformation device; When not applying control voltage on the electrooptic crystal, the wavelength of Q impulse solid state laser is all through polarization splitting prism, and through quarter wave plate and total reflective mirror reflection, polarization splitting prism all reflexes to laser output mirror with it again; When the electrooptic modulation crystal applies 1/2 wave voltage, polarization splitting prism all reflects the wavelength of Q impulse solid state laser, enter described laser nonlinear frequency transformation device, become the pump light of optical parametric oscillation, after optical parametric oscillation total reflective mirror reflection again through polarization splitting prism all through to laser output mirror.
The second kind of automatically controlled laser dual laser of intracavity module provided by the invention, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in the laserresonator of front end of line polarization Q impulse solid state laser, set gradually electrooptic modulation crystal, optical parametric oscillation input mirror and polarization splitting prism; On the reflected light path of polarization splitting prism, be provided with nonlinear crystal, quarter wave plate and optical parametric oscillation total reflective mirror successively, in its transmitted light path, be provided with quarter wave plate and total reflective mirror, in its emitting light path, laser output mirror is set; Wherein said optical parametric oscillation input mirror, nonlinear crystal and optical parametric oscillation total reflective mirror are formed laser nonlinear frequency transformation device.
The automatically controlled laser dual laser of the third intracavity provided by the invention module, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in front end of line polarization Q impulse solid state laser laserresonator, an electrooptic modulation crystal and polarization splitting prism are set; In the reflected light path of described polarization splitting prism, set gradually nonlinear crystal, optical parametric oscillation total reflective mirror, in its transmitted light path, set gradually quarter wave plate and total reflective mirror, in its emitting light path, laser output mirror is set.(Fig. 3)
The 4th kind of automatically controlled laser dual laser of intracavity module provided by the invention, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in front end of line polarization Q impulse solid state laser laserresonator, electrooptic modulation crystal and Brewster prism are set, in the Brewster prism transmitted light path, set gradually the laser nonlinear frequency transformation device of forming by optical parametric oscillation input mirror, nonlinear crystal and optical parametric oscillation total reflective mirror; In the reflected light path of Brewster prism, total reflective mirror is set; In its emitting light path, laser output mirror is set; The light splitting surface of Brewster prism plates the film that is all-trans to parametric oscillation light, and presses the Brewster's angle placement of outermost one deck high refractive index film.
The 5th kind of automatically controlled laser dual laser of intracavity module provided by the invention, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in front end of line polarization Q impulse solid state laser laserresonator, set gradually the electrooptic modulation crystal, optical parametric oscillation input mirror and Brewster window, in the reflected light path of Brewster prism, set gradually nonlinear crystal and optical parametric oscillation total reflective mirror, quarter wave plate that in its transmitted light path, is provided with and total reflective mirror, in its emitting light path laser output mirror is set, described optical parametric oscillation input mirror and Brewster window, nonlinear crystal and optical parametric oscillation total reflective mirror are formed laser nonlinear frequency transformation device.
The present invention compared with prior art, have advantage and high-lighting effect: the present invention utilizes the strong selectivity of nonlinear crystal to polarization state, with putting on the design that voltage on the electrooptic crystal carries out output wavelength frequency hopping coding.Promptly with putting on the switching that 1/2 wave voltage on the electrooptic crystal is exported the laser polarization state, and then utilize the polarization spectro element to control the transmission direction of front end laser, make the laser generation of a certain linear polarization directly not export first kind of wavelength by nonlinear crystal; And the laser generation of another linear polarization is by second kind of optical maser wavelength of nonlinear crystal output.Because electrooptic crystal can realize high frequency modulated, so the present invention can realize sufficiently high wavelength conversion speed, realize Wavelength-encoding output easily, especially in military electrooptical countermeasures system, can carry out the frequency hopping coding of output wavelength easily.In addition, the formed wavelength of nonlinear frequency transformation can not have unnecessary restriction to laser working medium away from first output wavelength yet.Have wavelength and switch simply, can guarantee accurately that the laser of two kinds of wavelength exports with light path, reach higher output performance index easily, the structural reliability height, manufacturing cost is lower.
Description of drawings
Fig. 1 is first kind of utilizing polarization splitting prism as the dual laser module of polarization spectro element provided by the invention
The structural representation of embodiment.
Fig. 2 is second kind of utilizing polarization splitting prism as the dual laser module of polarization spectro element provided by the invention
The structural representation of embodiment.
Fig. 3 is the structural representation that utilizes polarization splitting prism as the third embodiment of the dual laser module of polarization spectro element provided by the invention.
Fig. 4 is the structural representation that utilizes Brewster prism as the embodiment of the dual laser module of polarization spectro element provided by the invention.
Fig. 5 is the structural representation that utilizes Brewster window as the embodiment of the dual laser module of polarization spectro element provided by the invention.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and structure are further described.
Core of the present invention is polarization spectro control.Make the linearly polarized light energy pumping nonlinear optical device as far as possible losslessly that meets matching condition; And the linearly polarized light energy that does not meet matching condition has suitable coupling output.
Embodiment 1: realize the single resonance parametric oscillation light dual wavelength output of pump light and the critical phase matched of I class
As shown in Figure 1, in the laserresonator of front end of line polarization Q impulse solid state laser 1, added an electrooptic modulation crystal 2 and polarization splitting prism 3, when the electrooptic modulation crystal 2 does not apply voltage, it to output the laser rays polarization state without any influence; Front end of line polarization Q-switched pulse laser 1 allows the laser generation of parallel polarization at this moment, polarization splitting prism 3 all sees through it, again through quarter wave plate 6 and total reflective mirror 7 reflections, its linear polarization state half-twist, polarization splitting prism 3 all reflexes to laser output mirror 5 with it, Q impulse solid state laser 1, total reflective mirror 7 and outgoing mirror 5 are formed a Compound Cavity like this, keep the wavelength output of front end Q-switched pulse laser 1; When the electrooptic modulation crystal applies 1/2 wave voltage, it makes the laser rays polarization state half-twist of front end, become the vertical polarization component, polarization splitting prism 3 all reflects it and enters the laser nonlinear frequency transformation device of being made up of optical parametric oscillation input mirror 9, nonlinear crystal 10 and optical parametric oscillation total reflective mirror 11, become the pump light of optical parametric oscillation, laser nonlinear frequency transformation device is with absorptive pumping laser and produce the polarization state parametric oscillation light vertical with pump light.This moment, polarization splitting prism 3 made it all through through laser output mirror 5 output parameter oscillation lights.The partial reflection film of laser output mirror 5 plating front end adjusting Q pulse laser output wavelengths, the anti-reflection film of parametric oscillation light.
Embodiment 2: realize the double resonance parametric oscillation light dual wavelength output of the II class noncritical phase matching of pump light and degeneracy
The output of the double resonance optical parametric oscillation of the II class noncritical phase matching of degeneracy is that two linear polarization have, so its embodiment has its particularity.But because the output wavelength of the double resonance optical parametric oscillator of the critical phase matched of II class of degeneracy is one times of its pump light, so the quarter wave plate of parametric oscillation light is exactly 1/2 wave plate of pump light.Utilize this characteristic, as shown in Figure 2, add that in embodiment 1 quarter wave plate (1/2 wave plate of pump light just) 6 of a parametric oscillation light just can be realized.Difference on its principle only is when the electrooptic modulation crystal applies 1/2 wave voltage, in the chamber oscillating laser be polarized Amici prism 3 all reflection enter by optical parametric oscillation input mirror 9, laser output mirror 5, the Compound Cavity laser nonlinear frequency transformation device that nonlinear crystal 10 and optical parametric oscillation total reflective mirror 11 are formed, pump light does not change same two directional pump laser nonlinear frequency transformation device through twice its 1/2 wave plate 6 back linear polarization state; The parametric oscillation light transmission polarization splitting prism 3 of parallel lines polarization is by laser output mirror 5 coupling outputs; The parametric oscillation light of perpendicular linear polarization is by polarization splitting prism 3 reflections, maintain by the parametric oscillation input mirror, nonlinear crystal 10, vibration in the resonant cavity that optical parametric oscillation total reflective mirror 11 is formed, one back and forth in twice quarter wave plate by parametric oscillation light, polarization state also becomes the parametric oscillation light transmission polarization splitting prism 3 of parallel lines polarization by laser output mirror 5 coupling outputs.Plated film requires: the anti-reflection film of optical parametric oscillation input mirror 9 plating front end adjusting Q pulse laser output wavelengths, the total reflection film of parametric oscillation light; The partial reflection film of laser output mirror 5 plating front end adjusting Q pulse laser output wavelengths, the partial reflection film of parametric oscillation light; The high-reflecting film of optical parametric oscillator total reflective mirror 11 plating front end adjusting Q pulse laser output wavelengths and parametric oscillation light; The anti-reflection film of front end adjusting Q pulse laser output wavelength and parametric oscillation light is all plated at nonlinear crystal 10 two ends.
Embodiment 3: realize the frequency doubled light dual wavelength output of pump light and the tuning angle of I class
Only be that with the difference of embodiment 1 frequency multiplication does not need resonant cavity, so can remove the humorous galvanometer of a slice (optical parametric oscillation input mirror 9 promptly is not set), other principle is all similar, as shown in Figure 3.When the electrooptic modulation crystal does not apply voltage, it to output the laser rays polarization state without any influence; Front end of line polarization Q impulse solid state laser 1 allows the laser generation of parallel polarization at this moment, polarization splitting prism 3 all sees through it, again through quarter wave plate 6 and total reflective mirror 7 reflections, its linear polarization state half-twist, polarization splitting prism 3 all reflexes to laser output mirror 5 with it, Q impulse solid state laser 1, total reflective mirror 7 and laser output mirror 5 are formed a Compound Cavity like this, keep the wavelength output of front end Q-switched pulse laser; When the electrooptic modulation crystal applies 1/2 wave voltage, it makes the laser rays polarization state half-twist of front end, become the vertical polarization component, polarization splitting prism makes its all reflection downwards, thereby make Q impulse solid state laser 1, laser output mirror 5 and optical parametric oscillation total reflective mirror 11 form an inner cavity frequency-doubling laser, produce the double-frequency laser of parallel polarization, this moment, polarization splitting prism 3 made it all through the output double-frequency laser.Plated film requires: the partial reflection film of laser output mirror 5 plating front end adjusting Q pulse laser output wavelengths, the anti-reflection film of frequency doubled light; The high-reflecting film of total reflective mirror 7 plating front end adjusting Q pulse laser output wavelengths and frequency doubled light; The anti-reflection film of front end adjusting Q pulse laser output wavelength and frequency doubled light is all plated at nonlinear crystal 10 two ends.
Embodiment 4: realize single resonance (or double resonance of degeneracy) the parametric oscillation light dual wavelength output of pump light and the noncritical phase matching of II class
As shown in Figure 4, the 4th embodiment provided by the invention is provided with electrooptic modulation crystal 2 and Brewster prism 12 in front end of line polarization Q impulse solid state laser 1 laserresonator, set gradually the laser nonlinear frequency transformation device of being made up of optical parametric oscillation input mirror 9, nonlinear crystal 10 and optical parametric oscillation total reflective mirror 11 in the Brewster prism transmitted light path; Total reflective mirror 7 is set in the reflected light path of Brewster prism; The light splitting surface of Brewster prism 12 plates the film that is all-trans to parametric oscillation light, and presses the Brewster's angle placement of outermost one deck high refractive index film.When the electrooptic modulation crystal does not apply voltage, it to output the laser rays polarization state without any influence, the laser generation of front end of line polarization Q-switched pulse laser 1 permission vertical polarization this moment, because Brewster prism 12 is to the only partial reflection of this polarization direction and transmission, according to calculating, as long as select the refractive index of a suitable Brewster prism outermost skim, it just can one back and forth in coupling require the laser output of ratio, the Q impulse solid state laser 1 like this, Brewster prism 12 and total reflective mirror 7 are formed a Compound Cavity, keep the wavelength output of front end Q-switched pulse laser; When the electrooptic modulation crystal applies 1/2 wave voltage, it makes the laser rays polarization state half-twist of front end, become the parallel polarization component, transfer this moment the linear polarization of Q Nd:YAG laser output just in time identical with the desired polarization direction of optical parametric oscillator, and just in time see through Brewster prism 12 pumpings fully by optical parametric oscillation input mirror 9, the two directional pump optical parametric oscillator that nonlinear crystal 10 and optical parametric oscillation total reflective mirror 11 are formed, optical parametric oscillator leaves the parametric oscillation light that all is converted into identical polarization direction with absorptive pumping laser, by the film output parameter oscillating laser that is all-trans of Brewster prism 12.Plated film requires: the anti-reflection film of the humorous galvanometer 9 plating front end adjusting Q pulse laser output wavelengths of optical parametric oscillation, the partial reflection film of parametric oscillation light; The anti-reflection film of front end adjusting Q pulse laser output wavelength and parametric oscillation light is all plated at nonlinear crystal 10 two ends; The high-reflecting film of optical parametric oscillator total reflective mirror 11 plating front end adjusting Q pulse laser output wavelengths and parametric oscillation light; The partial reflection film of laser outgoing mirror 5 plating adjusting Q pulse laser output wavelengths, the anti-reflection film of parametric oscillation light.
Embodiment 5: realize single resonance (or double resonance of degeneracy) the parametric oscillation light dual wavelength output of pump light and the noncritical phase matching of II class
As shown in Figure 5, added an electrooptic modulation crystal 2 and Brewster window 13 in front end of line polarization Q impulse resonant cavity of solid state laser, 13 of Brewster windows are used the front end laser wave are grown up to the Brewster's angle placement just in the present embodiment.When the electrooptic modulation crystal 2 does not apply voltage, it to output the laser rays polarization state without any influence, front end of line polarization Q-switched pulse laser 1 allows the laser generation of parallel polarization at this moment, because Brewster window 13 only all divides transmission to this polarization direction, pass through quarter wave plate 6 and completely reflecting mirror 7 twice again, the linear polarization state half-twist becomes the vertical polarization component, and most of light is reflexed to the 5 coupling outputs of dual laser outgoing mirror by Brewster window 13; Because electric-optically Q-switched laser generation that allows a direction, small part will can not formed laser generation by the light of Brewster window transmission.This bar Q impulse solid state laser 1, laser outgoing mirror 5 and completely reflecting mirror 7 are formed a Compound Cavity, keep the wavelength output of front end Q-switched pulse laser.When the electrooptic modulation crystal applies 1/2 wave voltage, it makes the laser rays polarization state half-twist of front end, become the vertical polarization component, Brewster window 13 can arrive the laser-bounce of front end by amount vibration input mirror 9, in the two directional pump optical parametric oscillator that nonlinear crystal 10 and optical parametric oscillation total reflective mirror 11 are formed, become the pump light of parametric oscillator, 13 pairs of parametric oscillation light of Brewster window this moment are not that strict Brewster's angle is placed, according to calculating, as long as select suitable Brewster window material (laser coupling delivery efficiency as required), it just can be exported at the laser that requires ratio that is coupled in back and forth.Plated film requires: the anti-reflection film of optical parametric oscillation input mirror 9 plating adjusting Q pulse laser output wavelengths, the total reflection film of parametric oscillation light; The anti-reflection film of adjusting Q pulse laser output wavelength and parametric oscillation light is all plated at nonlinear crystal 10 two ends; The high-reflecting film of optical parametric oscillator total reflective mirror 11 plating adjusting Q pulse laser output wavelengths and parametric oscillation light.
Claims (8)
1. the automatically controlled optical maser wavelength code input method of intracavity is characterized in that this method comprises the steps:
1) with the electrooptic modulation crystal that is arranged in the laserresonator, laser nonlinear frequency transformation device and be used to guarantee pump light two directional pump laser nonlinear frequency transformation device and make dual-wavelength laser replace the outgoing mirror of front end of line polarization Q impulse solid state laser with optical axis output and one group of optics control element containing the polarization spectro element; Wherein said laser nonlinear frequency transformation device is made up of optical parametric oscillation outgoing mirror, nonlinear crystal and optical parametric oscillation total reflective mirror or is made up of nonlinear crystal and optical parametric oscillation total reflective mirror;
2) when not applying control voltage on the electrooptic crystal, utilize the polarization spectro element, make a kind of obstructed too drastic optical nonlinear frequency-transposition arrangement of laserresonator of polarization state, keep the wavelength output that front end is transferred Q polarized pulses laser, make first kind of wavelength of its output;
3) when applying 1/2 λ voltage on the electrooptic crystal, make the laser polarization state half-twist that allows vibration in the laserresonator, with do not apply the polarization state orthogonal of control during voltage on the electrooptic crystal, utilize the polarization spectro element, control laserresonator at this moment is by laser nonlinear frequency transformation device, become the pump light of laser nonlinear frequency transformation device, it is second kind of output wavelength that laser nonlinear frequency transformation device makes its nonlinear transformation.
2. in accordance with the method for claim 1, it is characterized in that: according to the waveform that puts on the voltage on the electrooptic crystal, its final output wavelength is a kind of wavelength in the dual wavelength, or two kinds of wavelength alternate coded outputs.
3. in accordance with the method for claim 1, it is characterized in that: the frequency multiplication wavelength that second wavelength being exported is first wavelength, the optical parametric oscillation wavelength of degeneracy or single resonance.
4. implement the dual laser module of method according to claim 1 for one kind, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in the laserresonator of front end of line polarization Q impulse solid state laser (1), cancel outgoing mirror and set gradually an electrooptic modulation crystal (2) and polarization splitting prism (3); On the reflected light path of polarization splitting prism, set gradually by optical parametric oscillation outgoing mirror (9), nonlinear crystal (10) and optical parametric oscillation total reflective mirror (11); Quarter wave plate (6) and total reflective mirror (7) are set in the transmitted light path of polarization splitting prism; On its emitting light path, be provided with laser output mirror (5); Described optical parametric oscillation outgoing mirror (9), nonlinear crystal (10) and optical parametric oscillation total reflective mirror (11) are formed laser nonlinear frequency transformation device; When not applying control voltage on the electrooptic crystal, the oscillating laser of Q impulse solid state laser passes through the reflection of quarter wave plate (6) and total reflective mirror (7) more all through polarization splitting prism, and polarization splitting prism all reflexes to laser output mirror (5) with it; When the electrooptic modulation crystal applies 1/2 wave voltage, polarization splitting prism all reflects the oscillating laser of Q impulse solid state laser, enter described laser nonlinear frequency transformation device, become the pump light of optical parametric oscillation, after optical parametric oscillation total reflective mirror (11) reflection again through polarization splitting prism all through to laser output mirror (5).
5. implement the dual laser module of method according to claim 1 for one kind, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in the laserresonator of front end of line polarization Q impulse solid state laser (1), cancel outgoing mirror and set gradually electrooptic modulation crystal (2), optical parametric oscillation input mirror (9) and polarization splitting prism (3); On the reflected light path of polarization splitting prism, be provided with nonlinear crystal (10), quarter wave plate (6) and optical parametric oscillation total reflective mirror (11) successively, in its transmitted light path, be provided with quarter wave plate (6) and total reflective mirror (7), laser output mirror (5) is set in its emitting light path; Wherein said optical parametric oscillation input mirror (9), nonlinear crystal (10) and optical parametric oscillation total reflective mirror (11) are formed laser nonlinear frequency transformation device.
6. implement the dual laser module of method according to claim 1 for one kind, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in front end of line polarization Q impulse solid state laser (1) laserresonator, cancel outgoing mirror and electrooptic modulation crystal (2) is set and Brewster prism (12), in Brewster prism (12) transmitted light path, set gradually the laser nonlinear frequency transformation device of forming by optical parametric oscillation input mirror (9), nonlinear crystal (10) and optical parametric oscillation total reflective mirror (11); Total reflective mirror 7 is set in the reflected light path of Brewster prism; The light splitting surface of Brewster prism (12) plates the film that is all-trans to parametric oscillation light, and presses the Brewster's angle placement of outermost one deck high refractive index film.
7. implement the dual laser module of method according to claim 1 for one kind, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in front end of line polarization Q impulse solid state laser (1) laserresonator, cancel outgoing mirror and set gradually electrooptic modulation crystal (2), optical parametric oscillation input mirror (9) and Brewster window (13), in the reflected light path of Brewster prism, set gradually nonlinear crystal (10) and optical parametric oscillation total reflective mirror (11), quarter wave plate that in its transmitted light path, is provided with (6) and total reflective mirror (7), laser output mirror (5) is set, described optical parametric oscillation input mirror (9) in its emitting light path, Brewster window (13), nonlinear crystal (10) and optical parametric oscillation total reflective mirror (11) are formed laser nonlinear frequency transformation device.
8. implement the dual laser module of method according to claim 1 for one kind, contain front end of line polarization Q impulse solid state laser, it is characterized in that: in front end of line polarization Q impulse solid state laser (1) laserresonator, cancel outgoing mirror and an electrooptic modulation crystal (2) is set and polarization splitting prism (3); In the reflected light path of described polarization splitting prism, set gradually nonlinear crystal (10), optical parametric oscillation total reflective mirror (11), in its transmitted light path, set gradually quarter wave plate (6) and total reflective mirror (7), laser output mirror (5) is set in its emitting light path.
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| CN112909720A (en) * | 2021-01-22 | 2021-06-04 | 江苏亮点光电科技有限公司 | 532nm/1570nm dual-wavelength common-aperture freely-switchable output laser |
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| CH582433A5 (en) * | 1974-08-28 | 1976-11-30 | Oerlikon Buehrle Ag | |
| CN87212929U (en) * | 1987-08-29 | 1988-08-31 | 天津大学 | Nanosecond twin-pulse light gate for solid-state laser |
| CN2362210Y (en) * | 1999-03-26 | 2000-02-02 | 中国科学技术大学 | Double-wavelength and-pulse laser having prism beam splitter |
| JP2002107779A (en) * | 2000-10-03 | 2002-04-10 | Toshiba Corp | Wavelength conversion method, wavelength converter and laser device |
| CN1225066C (en) * | 2002-12-11 | 2005-10-26 | 中国科学院安徽光学精密机械研究所 | Homo-light-beam double-wavelength double-pulse laser generating method |
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2005
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| CN100582910C (en) * | 2006-11-27 | 2010-01-20 | 精工爱普生株式会社 | Light source device and image display apparatus |
| US7852885B2 (en) | 2006-11-27 | 2010-12-14 | Seiko Epson Corporation | Light source device and image display apparatus |
| CN102564730A (en) * | 2011-12-14 | 2012-07-11 | 长春理工大学 | High-complexity laser coding device |
| CN102564730B (en) * | 2011-12-14 | 2014-09-17 | 长春理工大学 | High-complexity laser coding device |
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| CN110752502A (en) * | 2019-05-09 | 2020-02-04 | 长春理工大学 | Single-longitudinal-mode and non-single-longitudinal-mode dual-wavelength laser alternate Q-switching output method and laser |
| CN110752502B (en) * | 2019-05-09 | 2021-01-01 | 长春理工大学 | Single-longitudinal-mode and non-single-longitudinal-mode dual-wavelength laser alternate Q-switching output method and laser |
| CN110181169A (en) * | 2019-06-26 | 2019-08-30 | 帝尔激光科技(无锡)有限公司 | Can independent control Laser Time Sharing light splitting optical path, laser-processing system and method |
| WO2021120487A1 (en) * | 2019-12-18 | 2021-06-24 | 南京先进激光技术研究院 | Electro-optic q modulation intra-cavity frequency-doubling sub-nanosecond pulse green laser |
| CN112467509A (en) * | 2020-11-12 | 2021-03-09 | 中国航空工业集团公司洛阳电光设备研究所 | Thermally stable laser for airborne ranging and irradiation |
| CN112909720A (en) * | 2021-01-22 | 2021-06-04 | 江苏亮点光电科技有限公司 | 532nm/1570nm dual-wavelength common-aperture freely-switchable output laser |
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