CN104361804A - Experimental system of pumping OPO (optical parametric oscillator) of YAG pulse laser - Google Patents
Experimental system of pumping OPO (optical parametric oscillator) of YAG pulse laser Download PDFInfo
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Abstract
The invention discloses an experimental system of a pumping OPO (optical parametric oscillator) of a YAG pulse laser. The experimental system comprises a light condensation cavity component, a Q-modulation component, a mirror component, an OPO conversion component, a second output mirror, a double-frequency mirror component and a target plate component on the same optical axis. The light condensation cavity component, the mirror component and the second output mirror form a resonance cavity of the YAG laser and form laser oscillation in the same after electrified, the Q-modulation component is used for enabling the YAG laser to output short pulse laser light intensive in energy, a resonance cavity of the OPO is formed in the OPO conversion component used for generating laser oscillation of appointed optical parameters in the resonance cavity of the OPO and outputting laser light, and the double-frequency mirror component is used for converting the laser light into green or red light distinguishable for human eyes; the target plate component is used for displaying the green or red light. The experimental system is modularized and is simple to operate and convenient for students to learn the structural composition and the operating principle of the OPO.
Description
Technical field
The present invention relates to teaching experiment system field, refer to the experimental system of YAG pulsed laser pump optical parametric oscillator particularly.
Background technology
Optical parametric oscillator (OPO) technology can produce the tunable coherent light of wide spectral and export, and existing optical maser wavelength can be transformed into conventional laser and be beyond one's reach wave band, it is in the extensive application of the numerous areas such as military confrontation, atmosphere environment supervision, laser radar and spectrum selective materials, is the important frequency tuning technology of the student of photoelectricity specialty one of needing to understand and grasp.
In order to the relevant knowledge allowing student better learn optical parametric oscillator, need means by experiment to allow student learn intuitively and understand optical parametric oscillator structure composition and principle of work.But, be not at present the education experiment of optical parametric oscillator and custom-designed experimental system, existing experimental apparatus or be the commercial product that overall package is good, cannot form to the inner structure of student's display optics parametric oscillator, it is the principle prototype that faculty oneself builds, complicated operation, regulates very consuming time, and student is difficult to interiorly when laboratory complete experimental implementation.Lack experiment porch simple and clear, simple to operate, education experiment is difficult to carry out.
Summary of the invention
In order to solve the problem lacking optical parametric oscillator teaching experiment platform at present, the invention provides and a kind ofly aim at optical parametric oscillator education experiment and the experimental system designed, this experimental system adopts modular design, simple to operate, clear in structure, is convenient to structure composition and principle of work that student understands and grasp optical parametric oscillator.
For achieving the above object, the experimental system of the YAG pulsed laser pump optical parametric oscillator designed by the present invention, its special character is, comprise the laser pump cavity assembly be positioned in same optical axis, adjust Q assembly, total reflective mirror assembly, OPO transition components, second outgoing mirror, two frequency multiplication mirror assemblies and target plate assembly, described laser pump cavity assembly, total reflective mirror assembly and the second outgoing mirror form the resonator cavity of YAG laser, in the resonator cavity of YAG laser, laser generation is set up after energising, the short-pulse laser of described tune Q assembly for making YAG laser export concentration of energy, described OPO transition components comprises ktp crystal and the first outgoing mirror, described ktp crystal and the first outgoing mirror form the resonator cavity of optical parametric oscillator, for setting up the laser generation of specifying optical parameter in the resonator cavity of optical parametric oscillator, and Output of laser, described two frequency multiplication mirror assemblies are used for laser to be converted to the distinguishable green glow of human eye or ruddiness, described target plate assembly is for showing green glow or ruddiness.
Further, the cavity that described laser pump cavity assembly comprises both ends open, the laser bar being positioned at the xenon lamp above described cavity and being positioned at below described xenon lamp on optical axis, described xenon lamp is connected with power supply, and by changing supply voltage value regulation output power.Xenon lamp and laser bar is encapsulated as YAG laser pumping source and operation material in laser pump cavity assembly.
Further, described tune Q assembly comprises adjusts Q bearing, is provided with adjusting Q crystal above described tune Q bearing, and described adjusting Q crystal is rotated by the turning axle being arranged on side.Adjusting Q crystal regulates the angle with Laser output optical axis by turning axle, also can depart from optical axis completely, realizes the mutual conversion of adjusting Q and uncomfortable Q mode of operation.
Further, described OPO transition components comprises OPO transition components support, ktp crystal, the first outgoing mirror and the rotating mechanism that both ends open is arranged, described rotating mechanism is positioned at the top of OPO transition components support, described ktp crystal and the first outgoing mirror are integrated, described ktp crystal is connected with rotating mechanism with the first outgoing mirror, is positioned at the both ends open place of described OPO transition components support.Ktp crystal and the first outgoing mirror are solidified into one, are convenient to entire system debugging.Ktp crystal and the first outgoing mirror move into by manual adjustments or shift out optical axis, complete the mutual conversion work of two kinds of wavelength laser output modes.
Further, described two frequency multiplication mirror assemblies comprise two frequency multiplication mirror bearing and frequency-doubling crystals, and described frequency-doubling crystal coordinates with two frequency multiplication mirror bearing grafting, and form perforation in the middle of described two frequency multiplication mirror bearings, described frequency-doubling crystal is positioned at perforation place of two frequency multiplication mirror bearings.Two frequency multiplication mirror assemblies are designed to detachable pattern, and frequency-doubling crystal can insert two frequency multiplication mirror bearings easily or take out from bearing, and the normal output and the frequency multiplication that realize laser export.
Further, described laser pump cavity assembly, adjusting Q assembly, total reflective mirror assembly, OPO transition components, the second outgoing mirror, two frequency multiplication mirror assemblies and target plate assembly to be fixed on the same plane of base, described base being provided with the display for showing magnitude of voltage, for the control panel of Switching Power Supply and regulation voltage and power supply.
Further, described first outgoing mirror is 1570nm outgoing mirror; Described second outgoing mirror is 1064nm outgoing mirror.
Principle of the present invention is: by total reflective mirror assembly, it is the laser of 1064nm that laser pump cavity assembly and the second outgoing mirror form YAG pulsed laser output wavelength, move into the YAG pulsed laser becoming after adjusting Q assembly and adjust Q, form by the optical parametric oscillator of YAG pulsed laser pumping after again OPO transition components being moved into optical axis, output wavelength is the laser of 1570nm, respectively 1064nm and the 1570nm invisible light that YAG pulsed laser and optical parametric oscillator export can be converted to respectively green glow and the ruddiness of 532nm and 785nm after inserting two frequency multiplication mirror assemblies, target plate assembly shows.
The invention has the advantages that: this experimental system adopts modularization, the visual design, the threshold voltage of measuring YAG pulsed laser and operating characteristic can be completed, the laser output characteristic of YAG pulsed laser under Q state is adjusted in measurement, measure the multiple test such as relevant comparative's experiment of adjusting YAG pulsed laser frequency multiplication operating characteristic under Q state, the threshold value measuring optical parametric oscillator, pulse waveform and wavelength, contrast experiment that YAG pulsed laser is relevant, OPO, help student to learn intuitively and the structure of understanding optical parametric oscillator forms and principle of work.Each optics is positioned in same optical axis through precision optical machinery, Q assembly, OPO transition components and two frequency multiplication mirror assemblies are adjusted to have higher repetitive positioning accuracy, can the mode of operation of fast switching system and light source classification, need not regulating system light path repeatedly, simple to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is index path of the present invention;
Fig. 3 is the structural representation adjusting Q assembly in Fig. 1;
Fig. 4 is the structural representation of OPO transition components in Fig. 1;
Fig. 5 is the structural representation of two frequency multiplication mirror assemblies in Fig. 1.
Wherein: laser pump cavity assembly 1, cavity 1.1, xenon lamp 1.2, laser bar 1.3, adjust Q assembly 2, adjust Q bearing 2.1, turning axle 2.2, adjusting Q crystal 2.3, total reflective mirror assembly 3, OPO transition components 4, OPO transition components support 4.1, ktp crystal 4.2, first outgoing mirror 4.3, rotating mechanism 4.4, the second outgoing mirror 5, two frequency multiplication mirror assembly 6, two frequency multiplication mirror bearings 6.1, frequency-doubling crystal 6.2, base 7, display 8, control panel 9, power supply 10, target plate assembly 11.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, the experimental system of YAG pulsed laser pump optical parametric oscillator of the present invention comprises the laser pump cavity assembly 1 be positioned in same optical axis, adjust Q assembly 2, total reflective mirror assembly 3, OPO transition components 4, second outgoing mirror 5, two frequency multiplication mirror assemblies 6 and target plate assembly 11, laser pump cavity assembly 1, total reflective mirror assembly 3 and the second outgoing mirror 5 form the resonator cavity of YAG laser, in the resonator cavity of YAG laser, laser generation is set up after energising, adjust the short-pulse laser of Q assembly 2 for making YAG laser export concentration of energy, OPO transition components 4 comprises ktp crystal 4.2 and the first outgoing mirror 4.3, ktp crystal 4.2 and the first outgoing mirror 4.3 form the resonator cavity of optical parametric oscillator, for setting up the laser generation of specifying optical parameter in the resonator cavity of optical parametric oscillator, and Output of laser, two frequency multiplication mirror assemblies 6 are for being converted to the distinguishable green glow of human eye or ruddiness by laser, target plate assembly 11 is for showing green glow or ruddiness.
Wherein, laser pump cavity assembly 1 cavity 1.1, the laser bar 1.3 that is positioned at the xenon lamp 1.2 above cavity 1.1 and is positioned at below xenon lamp 1.2 on optical axis that comprise both ends open.Be packaged with xenon lamp 1.2 and laser bar 1.3 in laser pump cavity assembly 1 as YAG laser pumping source and operation material, xenon lamp 1.2 is connected with power supply 10, and by changing supply voltage value regulation output power.
As shown in Figure 3, adjust Q assembly 2 to comprise and adjust Q bearing 2.1, adjust above Q bearing 2.1 and be provided with adjusting Q crystal 2.3, adjusting Q crystal 2.3 is rotated by the turning axle 2.2 being arranged on side.Adjusting Q crystal 2.3 regulates the angle with Laser output optical axis by turning axle 2, also can depart from optical axis completely, realizes the mutual conversion of adjusting Q and uncomfortable Q mode of operation.
As shown in Figure 4, OPO transition components 4 comprises OPO transition components support 4.1, ktp crystal 4.2, first outgoing mirror 4.3 and the rotating mechanism 4.4 that both ends open is arranged, rotating mechanism 4.4 is positioned at the top of OPO transition components support 4.1, ktp crystal 4.2 and the first outgoing mirror 4.3 are integrated, ktp crystal 4.2 is connected with rotating mechanism 4.3 with the first outgoing mirror 4.3, is positioned at the both ends open place of OPO transition components support 4.1.First outgoing mirror 4.3 is 1570nm outgoing mirror.Ktp crystal 4.2 and the first outgoing mirror 4.3 are fixed together, and at ktp crystal 4.2 plated film on the end face of laser bar 1.3, this rete is anti-reflection to 1064nm light, is all-trans to 1570nm light.The combination of the precision bearing system that rotating mechanism 4.4 can select tape spool to hold and elastic steel ball position-limit mechanism, can reach 20 " within repetitive positioning accuracy, meet system high precision conversion requirements.Ktp crystal 4.2 and the first outgoing mirror 4.3 move into by manual adjustments or shift out optical axis, complete the mutual conversion work of two kinds of laser.
As shown in Figure 5, two frequency multiplication mirror assemblies 6 comprise two frequency multiplication mirror bearing 6.1 and frequency-doubling crystals 6.2, frequency-doubling crystal 6.2 coordinates with two frequency multiplication mirror bearing 6.1 grafting, and form perforation in the middle of two frequency multiplication mirror bearings 6.1, frequency-doubling crystal 6.2 is positioned at perforation place of two frequency multiplication mirror bearings 6.1.Two frequency multiplication mirror assemblies 6 are designed to detachable pattern, and frequency-doubling crystal 6.2 can insert two frequency multiplication mirror bearings 6.1 easily or take out from two frequency multiplication mirror bearings 6.1, and the normal output and the frequency multiplication that realize laser export.
Laser pump cavity assembly 1, tune Q assembly 2, total reflective mirror assembly 3, OPO transition components 4, second outgoing mirror 5, two frequency multiplication mirror assembly 6 and target plate assembly 11 are fixed on the same plane of base 7, base 7 is provided with the display 8 for showing magnitude of voltage, for the control panel 9 of Switching Power Supply and regulation voltage and power supply 10, power supply 10 is connected with xenon lamp 1.2.
Figure 2 shows that experimental system index path, first outgoing mirror 4.3 pairs 1064nm light is all-trans, anti-to 1570nm light half, second outgoing mirror 5 pairs 1064nm light half is anti-, thoroughly high to 1570nm light, after xenon lamp 1.2 luminescence, the cavity 1.1 through laser pump cavity assembly 1 focuses on laser bar 1.3, make operation material realize population inversion, after the light sent vibrates between total reflective mirror assembly 3 and the second outgoing mirror 5, export 1064nm laser.OPO transition components 4 can move by vertical optical axis, and after transition components moves into optical axis, 1064nm optical pumping ktp crystal 4.2 produces 1570nm light, exports 1570nm laser after vibrating between ktp crystal 4.2 and the first outgoing mirror 4.3.System export 1064nm laser or 1570nm laser is converted to the distinguishable green glow of human eye after two frequency multiplication mirror assemblies 6 and ruddiness is presented on target plate assembly 11.
The concrete steps using the present invention to carry out optical parametric oscillator correlation test are:
A. threshold voltage and the operating characteristic of YAG pulsed laser is measured
In this experiment by changing supply voltage value, measuring it and exporting energy, and by calculating the electro-optical efficiency of YAG pulsed laser, draw the output energy of YAG pulsed laser and the relation curve of operating voltage.After obtaining threshold voltage, fix a suitable voltage, measure laser instrument output pulse waveform and spectrum.Experimental procedure is as follows:
1. Q assembly 2, OPO transition components 4 will be adjusted to shift out optical axis, connect a laser energy meter below at the second outgoing mirror 5.Opening power, pre-heating system.
2. supply voltage is adjusted to 600V, length presses trigger switch, looses one's grip after hearing a sound of " serge ", observes energy meter reading.
3. increasing primary power source voltage every 10V, by operating triggering equally, until appearance first is not the reading of 0 on energy meter, from now, recording 10 experimental datas in table 1.
Table 1 YAG laser static state not Q-switching energy measured value
| Number of times | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | On average |
| Voltage | 660 | 670 | 680 | 690 | 700 | 710 | 720 | 730 | 740 | 750 | |
| Energy | 2.63 | 12.7 | 37.6 | 94.5 | 143.5 | 176.3 | 184.7 | 199.6 | 202.5 | 208.7 |
4. utilize correction formula E
actual=1.3E
actual measurementcalculate laser instrument actual output energy corresponding under each magnitude of voltage, and utilize the data obtained to draw out relation curve between YAG pulsed laser output energy and operating voltage.
5. utilize formula meter
calculate the energy storage of electric capacity under each magnitude of voltage, the actual output energy obtained in integrating step 3, calculate electricity-light dress of YAG pulsed laser under each magnitude of voltage and change efficiency and ask its mean value, record as experimental result.
6. magnitude of voltage is fixed on 750V, energy meter is changed into PIN pipe and oscillograph, measure the pulse waveform of laser instrument, preserve image and analyze.
7. keep voltage constant, change PIN pipe and oscillograph into wavemeter, obtain now laser instrument
Output spectrum, preserve image and also analyze.
By this experiment, the threshold operative voltage 660V of YAG pulsed laser can be obtained; Energy-voltage curve of drawing also can indicate intuitively and export the situation of change of energy with voltage; An important performance indexes of the electricity-light conversion efficiency of trying to achieve laser instrument especially.The pulse waveform recorded and spectrum are also the important evidence analyzing YAG pulsed laser operating characteristic.
B. the laser output characteristic adjusting YAG pulsed laser under Q state is measured
The effect of tune Q is the output threshold value by artificial control laser instrument, makes laser instrument output stage sharp-pointed, the giant-pulse of concentration of energy, adjusts pulse width before and after Q all to there occurs change with output energy.We will pass through to change magnitude of voltage in this experiment, the output energy of YAG pulsed laser under measurement tune Q state, the electricity-light conversion efficiency of YAG pulsed laser under calculating tune Q state, and measure the oscillogram of laser pulse before and after tune Q, the change of analyzed pulse width.Experimental procedure is as follows:
1. tune Q assembly 2 is moved into optical axis, OPO transition components 4 shifts out optical axis, connects a laser energy meter below at the second outgoing mirror 5.Opening power, pre-heating system.
2. supply voltage is adjusted to 660V, length presses trigger switch, looses one's grip after hearing a sound of " serge ", observes energy meter reading, and record.Increase primary power source voltage every 10V, measure 10 groups of data records in table 2.
Table 2 YAG dynamic Laser Q-switching energy measured value
| Number of times | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | On average |
| Voltage | 660 | 670 | 680 | 690 | 700 | 710 | 720 | 730 | 740 | 750 | |
| Energy | 1.03 | 7.24 | 21.7 | 65.6 | 106.8 | 134.7 | 153.1 | 164.2 | 173.4 | 185.7 |
3. utilize correction formula E
actual=1.3E
actual measurementand formula
calculate the energy storage of electric capacity under laser instrument corresponding under each magnitude of voltage actual output energy and each magnitude of voltage respectively, then calculate the dynamic electricity of YAG pulsed laser-light under each magnitude of voltage and fill and change efficiency and ask its mean value, record as experimental result.
4. supply voltage is fixed on 750V, tune Q assembly 2 is shifted out optical axis, energy meter is changed to PIN pipe and oscillograph, measures timing chart now, preserve image and analyze the pulsewidth characteristic of the uncomfortable Q of YAG dynamic Laser.
5. supply voltage is fixed on 750V, tune Q assembly 2 is moved into optical axis, energy meter is changed to PIN pipe and oscillograph, measures timing chart now, preserve image and analyze the pulsewidth characteristic that YAG dynamic Laser adjusts Q.
After this experiment can verify tune Q, electricity-light conversion efficiency reduces greatly, and pulse width is contracted to nanosecond order, also demonstrates the feature adjusting Q to export energy stabilization in addition.
C. YAG pulsed laser frequency multiplication operating characteristic under measurement tune Q state
The laser that YAG pulsed laser exports is the invisible laser of 1064nm, and native system adopts frequency-doubling crystal 6.2 to be converted into the green glow of wavelength 532nm.This experiment is by the frequency-doubling conversion efficiency of YAG pulsed laser under measurement tune Q state, and the pulse waveform change after frequency multiplication and the wavelength variations after frequency multiplication, analyzing frequency-doubled effect is the impact exported on laser instrument.Experimental procedure is as follows:
1. tune Q assembly 2 and two frequency multiplication mirror assemblies 6 are moved into optical axis, OPO transition components 4 shifts out optical axis, connects a laser energy meter below at frequency-doubling crystal 6.2.Opening power, pre-heating system.
2. supply voltage is adjusted to 660V, length presses trigger switch, looses one's grip after hearing a sound of " serge ", observes energy meter reading, and record.Increase primary power source voltage every 10V, measure 10 groups of data records in table 3.
Table 3 YAG dynamic Laser q-multiplier energy measured value
| Number of times | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | On average |
| Voltage | 660 | 670 | 680 | 690 | 700 | 710 | 720 | 730 | 740 | 750 | |
| Energy | 1.02 | 7.04 | 20.9 | 65.4 | 105.3 | 133.5 | 149.1 | 158.2 | 170.5 | 183.8 |
3. utilize correction formula E
actual=1.3E
actual measurementand formula
calculate the actual energy storage exporting electric capacity under energy and each magnitude of voltage of laser instrument corresponding under each magnitude of voltage respectively, by formula E
1064=E
cη
electrical-opticaltransition draws the output energy of 1064nm laser under corresponding voltage, then calculates the dynamic frequency-doubling conversion efficiency of YAG pulsed laser under each magnitude of voltage and asks its mean value, recording as experimental result.
4. supply voltage is fixed on 750V, energy meter is changed to PIN pipe and oscillograph, measures timing chart now, preserve image and after analyzing frequency multiplication, YAG dynamic Laser adjusts the pulsewidth characteristic of Q.
5. keep supply voltage constant, change PIN pipe and oscillograph into wavemeter, measure YAG pulsed laser before and after frequency multiplication respectively and dynamically adjust the output wavelength of Q, preservation image also analyzes the wavelength shifting efficiency of frequency multiplication.
Experiment proves that frequency-doubling crystal 6.2 is quite high for the frequency-doubling conversion efficiency of 1064nm laser, and the measurement of pulse waveform is shown that frequency-doubled effect has a certain impact for the pulse width of laser, after frequency multiplication, the pulse width of laser will narrow, and achieves accurately reducing by half of output wavelength for the measured surface frequency-doubling crystal of output wavelength.Target plate assembly 11 can see obvious green glow, reach and export visualization object.
D. the threshold value of optical parametric oscillator, pulse waveform and wavelength is measured
The main output characteristic of optical parametric oscillator OPO existing optical maser wavelength can be transformed into conventional laser cannot reach wave band, and in native system, the Main Function of ktp crystal 4.2 is the laser laser of 1064nm being converted to 1570nm.This experiment is by measuring the conversion efficiency of optical parametric oscillator, and the wavelength before and after conversion and pulse waveform change, analyze the operating characteristic of OPO.Experimental procedure is as follows:
1. tune Q assembly 2 and OPO transition components 4 are all moved into optical axis, connect a laser energy meter below at the second outgoing mirror 5.Opening power, pre-heating system.
2. supply voltage is adjusted to 660V, length presses trigger switch, looses one's grip after hearing a sound of " serge ", observes energy meter reading.
3. increasing primary power source voltage every 10V, by operating triggering equally, until appearance first is not the reading of 0 on energy meter, writing down voltage now.Keep supply voltage 750V constant, repetitive operation, records 10 groups of data, and charges in table 4.
Table 4 OPO dynamic Laser Q-switching energy measured value 1064-1570 E=750V
| Number of times | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | On average |
| Energy mJ | 18.4 | 19.2 | 17.6 | 18.1 | 16.4 | `17.7 | 18.5 | 19.4 | 18.7 | 18.9 |
4. utilize correction formula E
actual=1.3E
actual measurementand formula
calculate the energy storage that OPO transition components 4 reality corresponding under each magnitude of voltage exports electric capacity under energy and fixed voltage value respectively, by formula E
1064=E
cη
electrical-opticaltransition draws the output energy of 1064nm laser under corresponding voltage, then calculates the dynamic OPO conversion efficiency of each OPO transition components 4 and asks its mean value, recording as experimental result.
5. keep supply voltage constant, energy meter is changed to PIN pipe and oscillograph, measures timing chart now, preserve image and analyze the pulsewidth characteristic that OPO dynamic Laser adjusts Q.
6. continue to keep voltage constant, change PIN pipe and oscillograph into wavemeter, measure the output spectrum of now OPO transition components 4, preserve image and analyze the spectral characteristic that OPO dynamic Laser adjusts Q.
Experiment proves that ktp crystal 4.2 is excellent as OPO crystal property, has higher OPO efficiency, meets phase-matching condition.Gained spectrogram also can show that OPO achieves the rapid translating of 1064nm laser and 1570nm laser intuitively.
The contrast experiment that E.YAG pulsed laser is relevant
From the general design idea of system, have under five kinds of mode of operations of system three kinds relevant with YAG pulsed laser, be common YAG pulsed laser respectively, adjust the YAG pulsed laser of Q and the YAG pulsed laser of q-multiplier.We will analyze the change of output characteristic of laser by the conversion of more than realization under fixed voltage three kinds of mode of operations in this experiment.Experimental procedure is as follows:
1. tune Q assembly 2, OPO transition components 4 and two frequency multiplication mirror assemblies 6 are all shifted out optical axis, opening power, pre-heating system.
2. supply voltage is fixed on a certain desired value on threshold voltage, length presses trigger switch, looses one's grip after hearing a sound of " serge ", observes the experimental phenomena on target plate assembly 11.Before target plate assembly 11, connect laser energy meter, PIN pipe and oscillograph, wavemeter respectively, measure the energy of now laser instrument output, pulse waveform and spectrum and make a record.
3. keep supply voltage constant, move into adjusting Q crystal 2.3, observe the experimental phenomena on target plate assembly 11.Before target plate assembly 11, connect laser energy meter, PIN pipe and oscillograph, wavemeter respectively, measure the energy of now laser instrument output, pulse waveform and spectrum and make a record, contrasting with the result obtained in step 2, analyzing reason.
4. keep supply voltage constant, the basis of step 3 is inserted frequency-doubling crystal 6.2, observes the experimental phenomena on target plate assembly 11.Before target plate assembly 11, connect laser energy meter, PIN pipe and oscillograph, wavemeter respectively, measure the energy of now laser instrument output, pulse waveform and spectrum and make a record, contrasting with the result obtained in step 3, analyzing reason.
5. change supply voltage twice, after tune Q assembly 2 and two frequency multiplication mirror assemblies 6 are shifted out optical axis, repeat step 2 to step 4.
In this experiment, before insertion frequency-doubling crystal 6.2, any experimental phenomena be cannot see by target plate assembly 11, because 1064nm belongs to sightless wave band, after inserting frequency-doubling crystal 6.2, can observe on target plate assembly 11 and occur green glow, in order to strengthen observing effect, can change the outfit a target plate assembly 11 with collector lens.Can see, after adjusting Q, the pulse width of laser narrows, and exports energy and reduces to some extent, but relatively stable, and wavelength is almost constant.It is very little that experimental result also shows to export energy attenuation before and after frequency multiplication, and shg efficiency is very high, and wavelength reduce by half also very accurate.
Relevant comparative's experiment of F.OPO
Two kinds remaining in five kinds of mode of operations of system then relevant with OPO, is respectively adjust the YAG laser pumped by pulsed laser OPO of Q and adjust the YAG laser pumped by pulsed laser OPO frequency multiplication of Q.Equally, we will analyze the change of output characteristic of laser by the conversion of more than realization under fixed voltage two kinds of mode of operations in this experiment.Experimental procedure is as follows:
1. OPO transition components 4 is moved into optical axis, adjust Q assembly 2 and two frequency multiplication mirror assemblies 6 to shift out optical axis, opening power, pre-heating system.
2. supply voltage is fixed on 750V, length presses trigger switch, looses one's grip after hearing a sound of " serge ", observes the experimental phenomena on target plate.Before target plate, connect laser energy meter, PIN pipe and oscillograph, wavemeter respectively, measure the energy of now laser instrument output, pulse waveform and spectrum and make a record.
3. keep supply voltage constant, move into adjusting Q crystal 2.3, observe the experimental phenomena on target plate assembly 11.Before target plate assembly 11, connect laser energy meter, PIN pipe and oscillograph, wavemeter respectively, measure the energy of now laser instrument output, pulse waveform and spectrum and make a record, contrasting with the result obtained in step 2, analyzing reason.
4. keep supply voltage constant, the basis of step 3 is inserted frequency-doubling crystal 6.2, observes the experimental phenomena on target plate assembly 11.Before target plate assembly 11, connect laser energy meter, PIN pipe and oscillograph, wavemeter respectively, measure the energy of now laser instrument output, pulse waveform and spectrum and make a record, contrasting with the result obtained in step 3, analyzing reason.
Equally, in this experiment, before insertion frequency-doubling crystal 6.2, target plate be cannot see any experimental phenomena, because 1570nm also belongs to sightless wave band, after inserting frequency-doubling crystal 6.2, ruddiness appears in target plate assembly 11.As can be seen from timing chart, after OPO, pulse width there is no too large change, and after frequency multiplication, pulsewidth has then had compression to a certain degree.
The content be not described in detail in this instructions belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
- The experimental system of 1.YAG pulsed laser pump optical parametric oscillator, it is characterized in that: comprise the laser pump cavity assembly (1) be positioned in same optical axis, adjust Q assembly (2), total reflective mirror assembly (3), OPO transition components (4), second outgoing mirror (5), two frequency multiplication mirror assemblies (6) and target plate assembly (11), described laser pump cavity assembly (1), total reflective mirror assembly (3) and the second outgoing mirror (5) form the resonator cavity of YAG laser, in the resonator cavity of YAG laser, laser generation is set up after energising, the short-pulse laser of described tune Q assembly (2) for making YAG laser export concentration of energy, described OPO transition components (4) comprises ktp crystal (4.2) and the first outgoing mirror (4.3), described ktp crystal (4.2) and the first outgoing mirror (4.3) form the resonator cavity of optical parametric oscillator, for setting up the laser generation of specifying optical parameter in the resonator cavity of optical parametric oscillator, and Output of laser, described two frequency multiplication mirror assemblies (6) are for being converted to the distinguishable green glow of human eye or ruddiness by laser, described target plate assembly (11) is for showing green glow or ruddiness.
- 2. the experimental system of YAG pulsed laser pump optical parametric oscillator according to claim 1, it is characterized in that: described laser pump cavity assembly (1) comprises the cavity (1.1) of both ends open, the xenon lamp (1.2) being positioned at described cavity (1.1) top and the laser bar (1.3) be positioned on the optical axis of described xenon lamp (1.2) below, described xenon lamp (1.2) is connected with power supply (10), and by changing supply voltage value regulation output power.
- 3. the experimental system of YAG pulsed laser pump optical parametric oscillator according to claim 1 and 2, it is characterized in that: described tune Q assembly (2) comprises adjusts Q bearing (2.1), described tune Q bearing (2.1) top is provided with adjusting Q crystal (2.3), and described adjusting Q crystal (2.3) is rotated by the turning axle (2.2) being arranged on side.
- 4. the experimental system of YAG pulsed laser pump optical parametric oscillator according to claim 1, it is characterized in that: described OPO transition components comprises the OPO transition components support (4.1) that both ends open is arranged, ktp crystal (4.2), first outgoing mirror (4.3) and rotating mechanism (4.4), described rotating mechanism (4.4) is positioned at the top of OPO transition components support (4.1), described ktp crystal (4.2) and the first outgoing mirror (4.3) are integrated, described ktp crystal (4.2) is connected with rotating mechanism (4.3) with the first outgoing mirror (4.3), be positioned at the both ends open place of described OPO transition components support (4.1).
- 5. the experimental system of YAG pulsed laser pump optical parametric oscillator according to claim 4, it is characterized in that: described two frequency multiplication mirror assemblies (6) comprise two frequency multiplication mirror bearings (6.1) and frequency-doubling crystal (6.2), described frequency-doubling crystal (6.2) coordinates with two frequency multiplication mirror bearing (6.1) grafting, form perforation in the middle of described two frequency multiplication mirror bearings (6.1), described frequency-doubling crystal (6.2) is positioned at perforation place of two frequency multiplication mirror bearings (6.1).
- 6. the experimental system of YAG pulsed laser pump optical parametric oscillator according to claim 2, it is characterized in that: described laser pump cavity assembly (1), adjust Q assembly (2), total reflective mirror assembly (3), OPO transition components (4), second outgoing mirror (5), two frequency multiplication mirror assemblies (6) and target plate assembly (11) are fixed on the same plane of base (7), described base (7) is provided with the display (8) for showing magnitude of voltage, for control panel (9) and the power supply (10) of Switching Power Supply and regulation voltage.
- 7. the experimental system of YAG pulsed laser pump optical parametric oscillator according to claim 4, is characterized in that: described first outgoing mirror (4.3) is 1570nm outgoing mirror; Described second outgoing mirror (5) is 1064nm outgoing mirror.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673917A (en) * | 2009-09-29 | 2010-03-17 | 天津大学 | End-pumped mid-infrared KTA parametric oscillator |
| CN102331649A (en) * | 2011-10-22 | 2012-01-25 | 西北大学 | Multi-wavelength terahertz wave parametric oscillator |
| CN103346468A (en) * | 2013-06-09 | 2013-10-09 | 华侨大学 | All-solid-state Q-switching frequency multiplication non-diffracting laser device |
| CN204229718U (en) * | 2014-10-17 | 2015-03-25 | 中国人民解放军海军工程大学 | The experimental system of YAG pulsed laser pump optical parametric oscillator |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101673917A (en) * | 2009-09-29 | 2010-03-17 | 天津大学 | End-pumped mid-infrared KTA parametric oscillator |
| CN102331649A (en) * | 2011-10-22 | 2012-01-25 | 西北大学 | Multi-wavelength terahertz wave parametric oscillator |
| CN103346468A (en) * | 2013-06-09 | 2013-10-09 | 华侨大学 | All-solid-state Q-switching frequency multiplication non-diffracting laser device |
| CN204229718U (en) * | 2014-10-17 | 2015-03-25 | 中国人民解放军海军工程大学 | The experimental system of YAG pulsed laser pump optical parametric oscillator |
Non-Patent Citations (1)
| Title |
|---|
| 万勇: "纳秒光学参量振荡器及其应用技术研究", 《中国优秀硕博士论文全文数据库（博士）信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846306A (en) * | 2016-05-23 | 2016-08-10 | 宁波中物东方光电技术有限公司 | Q modulation device for tuned pulse solid laser |
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