CN102255225A - Independent chirp parameter regulating system for realizing two-tone laser field - Google Patents
Independent chirp parameter regulating system for realizing two-tone laser field Download PDFInfo
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Abstract
The invention relates to an independent chirp parameter regulating system for realizing a two-tone laser field. A beam splitting piece which is inserted into an entrance of a pulse compressor of a femtosecond pulse laser divides a light source into two beams of light; the first beam of light enters into one pulse compressor and a hollow optical chirp system, and the other beam of light passes through a plane mirror B and enters into the other pulse compressor and the other hollow optical chirp system; the two beams of light are synthetized into one beam of light after passing through a reflector delayed time system and a frequency doubling crystal; and the synthesized beam of light passes through a reversible plane mirror and then is connected with a higher-order harmonic generating and detecting device and a spectrum phase interferometry instrument respectively so as to form the independent chirp parameter regulating system for realizing the two-tone laser field. The independent chirp parameter regulating system can carry out independent pulse compression on light with amplified energy in a femtosecond amplifier so as to acquire two beams of laser light sources capable of independently regulating the chirps; and the independent chirp parameter regulating system is simple in structure and easy to operate.
Description
Technical field
The present invention relates to a kind of parameter independent regulation system that warbles that realizes the two-color laser field.Can be used for two-color laser field or cycle magnitude two-color laser field, realize warble the separately independent regulation of parameter of two-beam source.
Background technology
Existing two-color laser field system all is after the pulse shortener of femtosecond laser amplifier, and light source is divided into two bundles, closes bundle with another bundle again after frequency multiplication is a branch of, makes up double-colored.Because two-beam overlaps on these parameters in intensity, wavelength, polarization, time-delay can separate regulation, therefore, produces in the process of the accurate spectrum of ultraviolet in high order harmonic component, the double-colored field method of this kind is widely used.Yet what this kind method was used is the light source of same pulse shortener output, and the chirp value that light comprised is identical, in case the regulating impulse compressor reducer, the content of warbling of the two-beam that separates later all can change.Therefore, in the double-colored field that has constructed double-colored field or cycle magnitude now, the parameter of warbling can not independent regulation.But produce in the process of the accurate spectrum of ultraviolet in the high order harmonic component method, but the content of warbling of light source is a very important parameter, directly the time domain width of gained chirped pulse after the spectrum form of the accurate spectrum of the final ultraviolet that obtains of influence and the Fourier transform.Therefore, a kind of parameter of warbling of our needs can be by the two-color laser field system of accurate and independent tuning.
Summary of the invention
The invention discloses a kind of parameter independent regulation system that warbles that realizes the two-color laser field, purpose is to overcome prior art can not realize the warble shortcoming of parameter independent regulation of two-beam source when using the two-color laser field to produce ultraviolet spectra.The source of the present invention from warbling and regulating---before the pulse shortener, be about to light source separately, separately through closing bundle again after pulse shortener and the subsequent adjustment, not only can keep the multi-parameter adjusting function of original two-color laser field to ultraviolet spectra, and can effectively realize the warble independent regulation of parameter of double-colored light source, for the multidimensional regulation and control of the accurate spectrum of later stage ultraviolet and the single chirped pulse that obtains transform limit lay the foundation.
A kind of parameter independent regulation system that warbles that realizes the two-color laser field, by a beam splitting chip, two pulse shorteners, two hollow optical fiber chirped systems, a speculum delayed time system is formed, a beam splitting chip is inserted in pulse shortener porch at femto-second laser, light source is divided into two bundles, wherein the first bundle light enters a cover pulse shortener, hollow optical fiber chirped system, another beam optical path enters another set of pulse shortener behind plane mirror B, hollow optical fiber chirped system, pass through the speculum delayed time system then, behind the frequency-doubling crystal, two-beam closes the bundle sheet by one and is combined into a branch of light, behind turnover plane mirror, produce and sniffer with high order harmonic component respectively, interference measuring instrument in spectrum position connects, constitute the parameter independent regulation system that warbles of two-color laser field, two-beam can be realized warbling on light path separately, intensity, wavelength, polarization, time-delay overlaps the independent regulation of these parameters.
Through the light after the amplification of regenerative amplification chamber realization energy, in pulse shortener, carry out the compression of pulse duration in the femto-second laser.Pulse shortener is made of grating, corner cube mirror delayed time system and a plane mirror A.Incident light by the grating dispersion broadening after, be divided into the different light of a lot of wavelength, the light of these different wave lengths is through after being fixed on the prism square and plane mirror on the delayed time system, the light path of being walked when getting back to grating is different, this system is promptly by regulating the distance between delayed time system change prism square and grating, just can adjust the optical path difference between the different wave length, thereby realize the adjustment of the pulse duration of final output light source.For attainable narrow pulse width, be called zero state of warbling this moment, and pulse duration is referred to as the state of warbling greater than the state of narrow pulse width, the pulse width information that is comprised in the corresponding pulse is called chirp value.Like this, we are in actual mechanical process, as long as the distance between appropriately change prism square and grating just can realize the adjusting of the parameter of warbling of output light source.
Hollow optical fiber chirped system is comparatively ripe at present, as to be used to compress femtosecond light source pulse width device, the narrowest femtosecond pulse that obtains the cycle magnitude.This system is mainly by the hollow optical fiber system with several chirped mirror is formed.Be filled with inert gas in the hollow optical fiber, femtosecond laser in optical fiber with the effect of inert gas generation strong nonlinearity, spectrum is broadened, by chirped mirror it is carried out pulsewidth compression again.This system can adjust the last pulse duration that obtains according to actual needs.Our the two-color laser field regulating system of warbling all is suitable for for the light source of various pulse durations.And the pulse duration of light is narrow more, and it is obvious more to the influence of the accurate spectrum of ultraviolet to regulate its content of warbling.
Closing the bundle sheet is the conllinear propagation that is used for realizing the double-colored light source of two bundles, and this light combination mirror sheet can be selected the anti-reflection film and the reflectance coating of corresponding its optical source wavelength according to actual conditions, thereby realizes the lowest loss of two-beam source energy.In addition, for the special circumstances that cycle magnitude femtosecond light source closes bundle, we can not ignore the influence of this eyeglass to two-beam source pulse duration.At this moment, we also can utilize the regulating system of independently warbling, and to the two-beam source precompensation of warbling, like this, both can not influence the energy of whole system respectively, can guarantee the pulse duration of every light source beam again.
Advantage of the present invention and good effect:
1. used two pulse shorteners, the light after energy in the femtosecond amplifier is amplified carries out independent pulse compression, thereby but two of the independent regulation that can obtain to warble is restrainted LASER Light Source;
2. the present invention is simple in structure, easy to operate, and the result who regulates is stable.In actual mechanical process, need only the distance between appropriately change prism square and grating, just can realize the independent regulation of the parameter of warbling of output light source.Neither influence the adjusting of warbling of another beam optical path, also can guarantee the accurate pulse duration of every light source beam according to follow-up actual light path (for example acquisition of cycle magnitude light source, the introducing of polarizer) appropriately change chirp value;
3. this two-color laser field regulating system of warbling all is suitable for for the light source of various pulse durations, be narrower than under the pulse duration situation of laser itself in the pulse duration that does not need last output, can omit hollow optical fiber chirped system, make system more succinctly, easily tuning;
4. when this method being applied in the process that high order harmonic component produces, except can realizing effective generation of the accurate spectrum of ultraviolet, can also be to the accurate spectrum of the ultraviolet that generates warble the accurate of content, spectrum form and control in real time.
Description of drawings
Fig. 1 realizes the parameter independent regulation system configuration schematic diagram of warbling of two-color laser field for the embodiment of the invention 1.
1. the light pulse after process regenerative amplification chamber realization energy amplifies in the femto-second laser, 2. plane mirror A, 3. grating, 4. corner cube mirror delayed time system, 5. pulse shortener, 6. plane mirror B, 7. transmissibility of adjustable attenuation piece, 8. hollow optical fiber chirped system, 9. high order harmonic component produces and sniffer, 10. beam splitting chip, 11. polarizers, 12. speculum delayed time systems, 13. frequency-doubling crystal, 14. close the bundle sheet, 15. turnover plane mirrors, 16. spectrum position interference measuring instruments.
Embodiment
Describe the present invention below in conjunction with drawings and Examples.
A kind of parameter independent regulation system that warbles that realizes the two-color laser field, structure as shown in Figure 1, by a beam splitting chip 10, two pulse shorteners 5, two hollow optical fiber chirped systems 8, a speculum delayed time system 12 is formed, a beam splitting chip 10 is inserted in porch at the pulse shortener 5 of femto-second laser, light source is divided into two bundles, wherein the first bundle light directly enters a cover pulse shortener 5, hollow optical fiber chirped system 8, enter another set of pulse shortener 5 behind another Shu Guangjing plane mirror B, hollow optical fiber chirped system 8, pass through speculum delayed time system 12 then, behind the frequency-doubling crystal 13, two-beam closes bundle sheet 14 by one and is combined into a branch of light, behind turnover plane mirror 15, produce and sniffer 9 with high order harmonic component respectively, spectrum position interference measuring instrument 16 light paths connect, constitute the parameter independent regulation system that warbles of two-color laser field, two-beam can be realized warbling on light path separately, intensity, wavelength, polarization, time-delay overlaps the independent regulation of these parameters.
Following examples: laser output center wavelength of light is 800nm, pulse duration is 40fs, the frequency doubled light that obtains the 800nm light source with BBO frequency-doubling crystal 13 is an example, the parameter independent regulation process of warbling of specific implementation two-color laser field is as follows: by the light pulse 1 after process regenerative amplification chamber realization energy amplifies in the femto-second laser, enter pulse shortener 5, realize the adjusting of its pulse chirp amount by the relative distance between adjusting grating 3 and the corner cube mirror delayed time system 4.After this adjustable laser pulse of warbling is regulated its intensity by transmissibility of adjustable attenuation piece 7, converge in the hollow optical fiber chirped system 8, can obtain the tunable femtosecond laser of warbling (the pulsewidth scope: 40～4fs) of pulsewidth.At this moment, 1: but 1 beam splitting chip 10 and the femtosecond laser of warbling that closes bundle sheet 14 places another identical independent tuning in road in parallel.In this road, also add a transmissibility of adjustable attenuation piece 7, made things convenient for the continuous adjusting of laser intensity; Increased the light source that a BBO frequency-doubling crystal 13 is used to obtain 400nm, its polarization state changes by polarizer 11.Polarizer 11 is placed on before the hollow optical fiber chirped system 8, can avoids under the situation of cycle magnitude light source the loss of 11 pairs of cycles of polarizer magnitude energy of light source.Close bundle sheet 14 with 800 and the light source of 400nm close the two-color laser field that the Shu Chengwei conllinear is propagated, both adjust by speculum delayed time system 12 in coincidence in time.This light source that closes behind the bundle enters the generation and the sniffer 9 of high order harmonic component, realizes the effective generation and the multidimensional regulation and control of the accurate spectrum of ultraviolet, and the parameter of regulation and control comprises: this two-beam of 800nm and 400nm intensity, pulsewidth, chirp value and relative polarization separately.In addition, the information of warbling that the two-color laser place that this conllinear is propagated comprises can reflex in the spectrum position interference measuring instrument 16 by turnover plane mirror 15 and go, and is constantly measured and determines.
Claims (1)
1. parameter independent regulation system that warbles that realizes the two-color laser field, by a beam splitting chip, two pulse shorteners, two hollow optical fiber chirped systems, a speculum delayed time system is formed, it is characterized in that: a beam splitting chip is inserted in the pulse shortener porch at femto-second laser, light source is divided into two bundles, wherein the first bundle light enters a cover pulse shortener, hollow optical fiber chirped system, enter another set of pulse shortener behind another Shu Guangjing plane mirror B, hollow optical fiber chirped system, pass through the speculum delayed time system again, frequency-doubling crystal, two-beam closes the bundle sheet by one and is combined into a branch of light, behind turnover plane mirror, produce and sniffer with high order harmonic component respectively, interference measuring instrument in spectrum position connects, and constitutes the parameter independent regulation system that warbles of two-color laser field.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494767A (en) * | 2011-12-13 | 2012-06-13 | 上海理工大学 | Device for generating orthogonal polarized double-color laser field |
| CN103560388A (en) * | 2013-11-05 | 2014-02-05 | 温州大学 | Device and method for producing high-order harmonic super-continuum spectrum |
| CN109510054A (en) * | 2018-12-27 | 2019-03-22 | 中国科学技术大学 | A kind of production method of multifrequency ultrashort laser pulse string |
| CN109546522A (en) * | 2018-11-29 | 2019-03-29 | 广东工业大学 | A kind of high repetition frequency extreme ultraviolet pulse generating device |
| CN111555101A (en) * | 2020-05-20 | 2020-08-18 | 中国科学技术大学 | Device for generating laser pulse train with adjustable frequency chirp |
| CN113644528A (en) * | 2021-07-20 | 2021-11-12 | 中国科学院上海光学精密机械研究所 | Multi-path beam splitting device and method for high-peak-power femtosecond laser |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2419710Y (en) * | 2000-03-30 | 2001-02-14 | 中国科学院上海光学精密机械研究所 | Femto second and tera watt level multi-pulse laser generator |
| US20040240493A1 (en) * | 2000-02-09 | 2004-12-02 | Sachio Uto | Ultraviolet laser-generating device and defect inspection apparatus and method therefor |
| CN1870359A (en) * | 2006-04-12 | 2006-11-29 | 中国科学院上海光学精密机械研究所 | Laser pulse stretching and compression device |
-
2011
- 2011-05-20 CN CN2011101333446A patent/CN102255225B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040240493A1 (en) * | 2000-02-09 | 2004-12-02 | Sachio Uto | Ultraviolet laser-generating device and defect inspection apparatus and method therefor |
| CN2419710Y (en) * | 2000-03-30 | 2001-02-14 | 中国科学院上海光学精密机械研究所 | Femto second and tera watt level multi-pulse laser generator |
| CN1870359A (en) * | 2006-04-12 | 2006-11-29 | 中国科学院上海光学精密机械研究所 | Laser pulse stretching and compression device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494767A (en) * | 2011-12-13 | 2012-06-13 | 上海理工大学 | Device for generating orthogonal polarized double-color laser field |
| CN102494767B (en) * | 2011-12-13 | 2013-10-02 | 上海理工大学 | Device for generating orthogonal polarized double-color laser field |
| CN103560388A (en) * | 2013-11-05 | 2014-02-05 | 温州大学 | Device and method for producing high-order harmonic super-continuum spectrum |
| CN103560388B (en) * | 2013-11-05 | 2016-07-20 | 温州大学 | A kind of apparatus and method producing higher hamonic wave super continuous spectrums |
| CN109546522A (en) * | 2018-11-29 | 2019-03-29 | 广东工业大学 | A kind of high repetition frequency extreme ultraviolet pulse generating device |
| CN109510054A (en) * | 2018-12-27 | 2019-03-22 | 中国科学技术大学 | A kind of production method of multifrequency ultrashort laser pulse string |
| CN109510054B (en) * | 2018-12-27 | 2020-05-05 | 中国科学技术大学 | Method for generating multi-frequency ultrashort laser pulse train |
| CN111555101A (en) * | 2020-05-20 | 2020-08-18 | 中国科学技术大学 | Device for generating laser pulse train with adjustable frequency chirp |
| CN113644528A (en) * | 2021-07-20 | 2021-11-12 | 中国科学院上海光学精密机械研究所 | Multi-path beam splitting device and method for high-peak-power femtosecond laser |
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Application publication date: 20111123 Assignee: JIANGSU TUOLING PHOTOELECTRIC SCIENCE & TECHNOLOGY CO., LTD. Assignor: University of Shanghai for Science and Technology Contract record no.: 2015310000056 Denomination of invention: Independent chirp parameter regulating system for realizing two-tone laser field Granted publication date: 20120822 License type: Exclusive License Record date: 20150415 |
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