CN104143758A - Control system of all-solid-state pulser based on frequency doubling technology - Google Patents
Control system of all-solid-state pulser based on frequency doubling technology Download PDFInfo
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- CN104143758A CN104143758A CN201310162533.5A CN201310162533A CN104143758A CN 104143758 A CN104143758 A CN 104143758A CN 201310162533 A CN201310162533 A CN 201310162533A CN 104143758 A CN104143758 A CN 104143758A
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Abstract
The invention discloses an all-solid-state pulse ultraviolet laser device based on the ruby laser frequency doubling technology. The all-solid-state pulse ultraviolet laser device is characterized by being composed of a laser input lens, a ruby crystal, one or more green light-emitting diode arrays, a Q switch, a laser frequency doubling crystal and a laser output lens. The laser input lens, the ruby crystal, the Q switch, the laser frequency doubling crystal and the laser output lens are sequentially arranged in space, the one or more green light-emitting diode arrays are arranged on the lateral sides of the ruby crystal, and the light-emitting directions of the one or more green light-emitting diode arrays are aligned with the lateral surfaces of the ruby crystal. The green light-emitting diode arrays are driven through pulses, the starting time of the Q switch is synchronously controlled, and pulse ultraviolet lasers which is 347 nm in wavelength can be periodically or aperiodically output according to requirements. The novel all-solid-state pulse ultraviolet laser device is mainly used for solving the problem that a low-multi-frequency all-solid-state pulse ultraviolet laser device is complex in structure, high in cost and low in long-term stability, is compact in structure and low in cost, has the good long-term stability, and is hopeful to replace traditional nitrogen laser devices in various kinds of mass spectrometers.
Description
Technical field
The present invention relates to impulse type ultraviolet solid-state laser, relate in particular to a kind of complete solid state pulse ultraviolet laser based on ruby laser frequency multiplication.
Background technology
As a kind of high-end analytical instrument, mass spectrometer has very important using value in biomedical and material analysis field.Resolving ionogenic mass spectrometer based on laser mainly adopts short wavelength's ultraviolet pulse laser as ion parsing lasing light emitter.
The nitrogen laser that the production of the current protein flight mass spectrometer detecting for human body diseases prevention and the normal employing of research wavelength are 337nm is as resolving lasing light emitter.In the use procedure of protein flight mass spectrometer, the user of various big hospital and institute finds to use and in the process of nitrogen laser, nitrogen inevitably can occur and reveal, cause thus the power output of nitrogen laser to reduce gradually, therefore, be only about about 3 years the useful life of this laser.After nitrogen laser can not reach the power requirement of use, just to have to laser to fill nitrogen, this has affected the actual use of this instrument greatly.In addition, the beam quality of nitrogen laser is relatively poor, is difficult to focus on a very little volume, mass spectrometric resolution is further improved more difficult.
There is the deficiencies such as stability in use, beam quality, life-span due to gas ultraviolet laser, make all-solid-state ultraviolet laser become the main flow of Ultra-Violet Laser device research.Research, produce that wavelength approaches 337nm, the novel all-solid-state ultraviolet laser with good optical qualities and long-term optical stability has important value for the mass spectrometric research and production of high-performance.In addition,, for complete solid state pulse ultraviolet laser can be successfully applied in mass spectrometer is produced, the cost performance of full-solid ultraviolet pulse laser is also considerable important parameter.
Approach 340nm in order to obtain a wavelength, meet the Ultra-Violet Laser output requirement of low repetition, macro-energy and narrow pulsewidth simultaneously, the general technology path adopting is by the pulsed infrared laser device frequency tripling of 1 micron waveband, or passes through the pulsed infrared laser quadruple of 1.3 micron wavebands.For example, utilize nonlinear optical frequency conversion technology and nonlinear optical crystal, the near-infrared 1047nm wavelength laser that Nd:YLF laser is produced carries out frequency tripling, and the Ultra-Violet Laser that the wavelength that can produce triple-frequency harmonics is 349nm replaces conventional nitrogen laser at present.Again for example, the Nd:YVO4 pulse laser that is 1342nm by development wavelength, recycling quadruple means can obtain the high repetition pulsed ultraviolet laser that wavelength is 336nm.
Above-mentioned frequency tripling or quadruple technology can obtain Laser output comparatively efficiently, and its Laser output wave band also comparatively approaches 340nm, can be applied to lasing ion and resolve.But because above-mentioned technological means all relate to high-power semiconductor laser for pumping source and comparatively complicated tandem type non-linear conversion process (frequency tripling comprise frequency multiplication with and frequency process, quadruple comprises frequency multiplication and connects frequency multiplication process), system configuration is comparatively complicated, cost is higher, and the long-time stability of laser are also difficult to ensure card.In addition, adopting the system of Nd:YVO4 laser quadruple to be more suitable in the Ultra-Violet Laser of the high repetition of output, low pulse energy, is not too suitable for the ultraviolet laser development of low repetition, high pulse energy.
Summary of the invention
The object of the invention is to overcome the deficiency of other impulse type all-solid-state ultraviolet lasers, a kind of novel full-solid ultraviolet pulse laser based on ruby laser two frequency doubling technologies is provided, its operation wavelength is positioned at 347nm, single pulse energy is greater than 100 μ J, have simple in structure, compact simultaneously, system laser activity is stable, the feature that cost of manufacture is lower.
A kind of complete solid state pulse ultraviolet laser based on ruby laser frequency multiplication is made up of laser input mirror 1, ruby crystal 2, green LED array 3, Q switching 4, laser frequency doubling crystal 5 and laser output mirror 6.Laser input mirror 1, ruby crystal 2, Q switching 4, laser frequency doubling crystal 5 and laser output mirror 6 are spatially arranged in turn, one or more green LED arrays 3 are placed on the side of ruby crystal 2, and its light emission direction is aimed at the side surface of ruby crystal.By pulsed drive green LED array 3, and the opening time of Synchronization Control Q switching 4 is (if the Q switching adopting is saturated absorbing body, synchronous without switch), the pulsed ultraviolet laser that periodicity or aperiodicity ground output wavelength are 347nm as required.Described ruby crystal 2 is laser crystals of a kind of diameter 3～8mm, length 30～100mm, chromium ion-doped concentration 0.02～0.05at%; Described Q switching 4 is a kind of operation wavelength acoustooptic switch or electrooptical switching or self-saturation absorbers at 694nm; Described laser frequency doubling crystal 5 is a kind of three lithium borates (LBO) crystal.Described laser input mirror 1 is greater than 99% to the laser reflectivity of 694nm, and described laser output mirror 6 is greater than 99% to the laser reflectivity of 694nm, and the laser reflectivity of 347nm is less than to 5%.
The another kind of complete solid state pulse ultraviolet laser based on ruby laser frequency multiplication is made up of laser input mirror 1, ruby crystal 2, green LED array 3, Q switching 4, laser output mirror 6 and laser frequency doubling crystal 5.Laser input mirror 1, ruby crystal 2, Q switching 4, laser output mirror 6 and laser frequency doubling crystal 5 are spatially arranged in turn, one or more green LED arrays 3 are placed on the side of ruby crystal 2, and its light emission direction is aimed at the side surface of ruby crystal.By pulsed drive green LED array 3, and the opening time of Synchronization Control Q switching 4 is (if the Q switching adopting is saturated absorbing body, synchronous without switch), the pulsed ultraviolet laser that periodicity or aperiodicity ground output wavelength are 347nm as required.Described ruby crystal 2 is laser crystals of a kind of diameter 3～8mm, length 30～100mm, chromium ion-doped concentration 0.02～0.05at%; Described Q switching 4 is a kind of operation wavelength acoustooptic switch or electrooptical switching or self-saturation absorbers at 694nm; Described laser frequency doubling crystal 5 is a kind of three lithium borates (LBO) crystal.Described laser input mirror 1 is greater than 99% to the laser reflectivity of 694nm, and described laser output mirror 6 is 95%～99.5% to the laser reflectivity of 694nm.
The present invention is mainly in order to solve low repetition complete solid state pulse ultraviolet laser complex structure, cost is high, long-time stability are low problem, obtains the novel complete solid state pulse ultraviolet laser that a kind of compact conformation, cost are lower, have fine long-time stability.Wavelength is that the laser of 347nm directly produces by two frequency multiplication modes, and ruby crystal has fabulous physicochemical characteristics, growing technology maturation, and green LED array is cheap, stable luminescent property, long service life.Have good laser characteristics and long-term working stability according to the ultraviolet pulse laser of the technology of the present invention development, cost performance is high, and good beam quality is expected to replace traditional nitrogen laser in all kinds of mass spectrometers.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the complete solid state pulse ultraviolet laser based on ruby laser intracavity frequency doubling;
Fig. 2 is the structural representation of the another kind of complete solid state pulse ultraviolet laser based on ruby laser cavity external frequency multiplication;
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of complete solid state pulse ultraviolet laser based on ruby laser frequency multiplication is made up of laser input mirror 1, ruby crystal 2, green LED array 3, Q switching 4, laser frequency doubling crystal 5 and laser output mirror 6.Laser input mirror 1, ruby crystal 2, Q switching 4, laser frequency doubling crystal 5 and laser output mirror 6 are spatially arranged in turn, one or more green LED arrays 3 are placed on the side of ruby crystal 2, and its light emission direction is aimed at the side surface of ruby crystal.By pulsed drive green LED array 3, and the opening time of Synchronization Control Q switching 4 is (if the Q switching adopting is saturated absorbing body, synchronous without switch), the pulsed ultraviolet laser that periodicity or aperiodicity ground output wavelength are 347nm as required.Described ruby crystal 2 is laser crystals of a kind of diameter 3～8mm, length 30～100mm, chromium ion-doped concentration 0.02～0.05at%; Described Q switching 4 is a kind of operation wavelength acoustooptic switch or electrooptical switching or self-saturation absorbers at 694nm; Described laser frequency doubling crystal 5 is a kind of three lithium borates (LBO) crystal.Described laser input mirror 1 is greater than 99% to the laser reflectivity of 694nm, and described laser output mirror 6 is greater than 99% to the laser reflectivity of 694nm, and the laser reflectivity of 347nm is less than to 5%.
As shown in Figure 2, the another kind of complete solid state pulse ultraviolet laser based on ruby laser frequency multiplication is made up of laser input mirror 1, ruby crystal 2, green LED array 3, Q switching 4, laser output mirror 6 and laser frequency doubling crystal 5.Laser input mirror 1, ruby crystal 2, Q switching 4, laser output mirror 6 and laser frequency doubling crystal 5 are spatially arranged in turn, one or more green LED arrays 3 are placed on the side of ruby crystal 2, and its light emission direction is aimed at the side surface of ruby crystal.By pulsed drive green LED array 3, and the opening time of Synchronization Control Q switching 4 is (if the Q switching adopting is saturated absorbing body, synchronous without switch), the pulsed ultraviolet laser that periodicity or aperiodicity ground output wavelength are 347nm as required.Described ruby crystal 2 is laser crystals of a kind of diameter 3～8mm, length 30～100mm, chromium ion-doped concentration 0.02～0.05at%; Described Q switching 4 is a kind of operation wavelength acoustooptic switch or electrooptical switching or self-saturation absorbers at 694nm; Described laser frequency doubling crystal 5 is a kind of three lithium borates (LBO) crystal.Described laser input mirror 1 is greater than 99% to the laser reflectivity of 694nm, and described laser output mirror 6 is 95%～99.5% to the laser reflectivity of 694nm.
The present invention is mainly in order to solve low repetition complete solid state pulse ultraviolet laser complex structure, cost is high, long-time stability are low problem, obtains the novel complete solid state pulse ultraviolet laser that a kind of compact conformation, cost are lower, have fine long-time stability.Wavelength is that the laser of 347nm directly produces by two frequency multiplication modes, and ruby crystal has fabulous physicochemical characteristics, growing technology maturation, and green LED array is cheap, stable luminescent property, long service life.Have good laser characteristics and long-term working stability according to the ultraviolet pulse laser of the technology of the present invention development, cost performance is high, and good beam quality is expected in all kinds of mass spectrometers, to replace traditional nitrogen laser, and significantly promotes mass spectrometric service behaviour.
All incorporated by reference in this application of all documents of mentioning in the present invention, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read above-mentioned instruction content of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (6)
1. the complete solid state pulse ultraviolet laser based on ruby laser frequency doubling technology, is characterized in that it is made up of laser input mirror 1, ruby crystal 2, one or more green LED array 3, Q switching 4, laser frequency doubling crystal 5 and laser output mirror 6; Laser input mirror 1, ruby crystal 2, Q switching 4, laser frequency doubling crystal 5 and laser output mirror 6 are spatially arranged in turn, one or more green LED arrays 3 are placed on the side of ruby crystal 2, and its light emission direction is aimed at the side surface of ruby crystal.By pulsed drive green LED array 3, and the opening time of Synchronization Control Q switching 4 is (if the Q switching adopting is saturated absorbing body, synchronous without switch), the pulsed ultraviolet laser that periodicity or aperiodicity ground output wavelength are 347nm as required; Described laser input mirror 1 is greater than 99% to the laser reflectivity of 694nm, and described laser output mirror 6 is greater than 99% to the laser reflectivity of 694nm, and the laser reflectivity of 347nm is less than to 5%.
2. the complete solid state pulse ultraviolet laser based on ruby laser frequency multiplication, is characterized in that it is made up of laser input mirror 1, ruby crystal 2, one or more green LED array 3, Q switching 4, laser output mirror 6 and laser frequency doubling crystal 5; Laser input mirror 1, ruby crystal 2, Q switching 4, laser output mirror 6 and laser frequency doubling crystal 5 are spatially arranged in turn, one or more green LED arrays 3 are placed on the side of ruby crystal 2, and its light emission direction is aimed at the side surface of ruby crystal; By pulsed drive green LED array 3, and the opening time of Synchronization Control Q switching 4 is (if the Q switching adopting is saturated absorbing body, synchronous without switch), the pulsed ultraviolet laser that periodicity or aperiodicity ground output wavelength are 347nm as required.Described laser input mirror 1 is greater than 99% to the laser reflectivity of 694nm, and described laser output mirror 6 is 95%～99.5% to the laser reflectivity of 694nm.
3. a kind of complete solid state pulse ultraviolet laser based on ruby laser frequency doubling technology according to claim 1 and 2, is characterized in that described ruby crystal 2 is cylindric laser crystals of a kind of diameter 3～8mm, length 30～100mm, chromium ion-doped concentration 0.02～0.05at%.
4. a kind of complete solid state pulse ultraviolet laser based on ruby laser frequency doubling technology according to claim 1 and 2, is characterized in that described Q switching 4 is a kind of operation wavelength acoustooptic switch or electrooptical switching or self-saturation absorbers at 694nm.
5. a kind of complete solid state pulse ultraviolet laser based on ruby laser frequency doubling technology according to claim 1 and 2, is characterized in that described laser frequency doubling crystal 5 is a kind of three lithium borates (LBO) crystal.
6. a kind of complete solid state pulse ultraviolet laser based on ruby laser frequency doubling technology according to claim 1 and 2, it is characterized in that described green LED array, is a kind of emission wavelength at 515～555nm, by the luminescent device of the tightly packed arrangement of 30～200 green LED chips.
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| CN201310162533.5A CN104143758A (en) | 2013-05-07 | 2013-05-07 | Control system of all-solid-state pulser based on frequency doubling technology |
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| CN201310162533.5A CN104143758A (en) | 2013-05-07 | 2013-05-07 | Control system of all-solid-state pulser based on frequency doubling technology |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327282A (en) * | 2001-05-22 | 2001-12-19 | 中国科学院福建物质结构研究所 | Multiple wavelength laser with acousto-optic Q modulation |
| CN1635672A (en) * | 2003-12-31 | 2005-07-06 | 中国科学院福建物质结构研究所 | Four-wavelength electro-optical Q-regulation pulse laser |
| CN101000995A (en) * | 2006-12-31 | 2007-07-18 | 陕西西大科里奥光电技术有限公司 | Quasi-continuous high power red, green double-wavelength laser with LD side pumping |
| CN102280810A (en) * | 2011-06-20 | 2011-12-14 | 青岛镭创光电技术有限公司 | Frequency-doubling laser with wide temperature working range |
| CN102290706A (en) * | 2011-07-19 | 2011-12-21 | 维林光电(苏州)有限公司 | Method for generating stable, full-time low noise laser output |
-
2013
- 2013-05-07 CN CN201310162533.5A patent/CN104143758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327282A (en) * | 2001-05-22 | 2001-12-19 | 中国科学院福建物质结构研究所 | Multiple wavelength laser with acousto-optic Q modulation |
| CN1635672A (en) * | 2003-12-31 | 2005-07-06 | 中国科学院福建物质结构研究所 | Four-wavelength electro-optical Q-regulation pulse laser |
| CN101000995A (en) * | 2006-12-31 | 2007-07-18 | 陕西西大科里奥光电技术有限公司 | Quasi-continuous high power red, green double-wavelength laser with LD side pumping |
| CN102280810A (en) * | 2011-06-20 | 2011-12-14 | 青岛镭创光电技术有限公司 | Frequency-doubling laser with wide temperature working range |
| CN102290706A (en) * | 2011-07-19 | 2011-12-21 | 维林光电(苏州)有限公司 | Method for generating stable, full-time low noise laser output |
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Application publication date: 20141112 |