CN1233074C - Continuous wave, femtosecond double-color double-tuned laser - Google Patents
Continuous wave, femtosecond double-color double-tuned laser Download PDFInfo
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- CN1233074C CN1233074C CN 01131717 CN01131717A CN1233074C CN 1233074 C CN1233074 C CN 1233074C CN 01131717 CN01131717 CN 01131717 CN 01131717 A CN01131717 A CN 01131717A CN 1233074 C CN1233074 C CN 1233074C
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- Prior art keywords
- mirror
- femtosecond
- continuous wave
- laser
- double
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- 239000013078 crystal Substances 0.000 claims abstract description 18
- 238000001228 spectrum Methods 0.000 claims abstract description 10
- 239000010936 titanium Substances 0.000 claims description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 14
- 239000010437 gem Substances 0.000 claims description 14
- 229910001751 gemstone Inorganic materials 0.000 claims description 14
- 229910052719 titanium Inorganic materials 0.000 claims description 14
- 210000001951 dura mater Anatomy 0.000 claims description 4
- 230000000644 propagated effect Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000001427 coherent effect Effects 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010905 molecular spectroscopy Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- WQEVDHBJGNOKKO-UHFFFAOYSA-K vanadic acid Chemical compound O[V](O)(O)=O WQEVDHBJGNOKKO-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Lasers (AREA)
Abstract
The invention relates to a solid femtosecond laser capable of simultaneously generating continuous wave and femtosecond light pulse bicolor coherent light.A pumping beam splitter 1 and a focusing lens 2 are arranged outside a resonant cavity provided with a laser crystal 14, and a continuous wave and femtosecond light pulse bicolor coherent light beam splitting and orienting device consisting of a spectrum spreading prism 13, dispersion compensation prisms 9 and 10, tuning diaphragms 11 and 12, a femtosecond pulse output mirror 6 and a continuous wave output mirror 7 is arranged in the resonant cavity. In the work, the pumping beam splitter divides the pumping light into two beams of light in the ratio of 3: 1, then the two beams of light are coupled into the laser crystal by the focusing lens to generate laser emission, the two beams of laser oscillate back and forth in the resonant cavity, gain is obtained by the laser medium at each oscillation, and finally the femtosecond pulse and the continuous wave laser are output through the femtosecond pulse output mirror and the continuous wave output mirror respectively.
Description
Technical field
Content of the present invention belongs to ultrafast optical instrument technical field, relates to a kind of total solids femto-second laser, particularly a kind ofly can produce the femto-second solid laser device that involves the double-colored coherent light of femtosecond light pulse continuously simultaneously.
Background technology
The foundation of the research of solid laser material and femtosecond laser technology provides necessary and complete condition for the generation of ultrashort laser pulse, has also constantly proposed new requirement simultaneously.Initial requirement is to produce single wavelength ultrashort laser pulse personnel for deliberation of independent tuning to atom, molecule, transient optical state, magnetics, ultrafast phenomenas such as physics are studied, but along with science and technology life science particularly, program control femtochemistry, developing rapidly of field science and technology such as many excited state spectroscopies, the application in many aspects of the ultrashort pulse laser of monochromatic pulses sequence has been subjected to the restriction of certain degree, have only the information that adopts double-colored or polychrome femto-second laser pulse could obtain mass efficient, thereby dual wavelength and three-wavelength femote second laser are also developed appearance in succession.In recent years, in the biological big ultrafast spectroscopy of molecular-excited state of research, ambits such as femtosecond time resolution locking Molecular Spectroscopy, need a kind of continuous wave, femtosecond time resolution scanning imagery bi-coloured light spectrometer, in order to optionally to encourage two different molecular generation double resonances in the especially big molecule, measure its fluorescence Spectra, and then acquisition is studied the fluorescence lifetime of molecule, molecular structure information and relevant dynamic characteristic, also need badly for this reason and can be the foundation that this double resonance measurement provides the laser of crucial light source, but still find no up to now, the report of similar device in the present technique field.
Summary of the invention
The objective of the invention is to remedy the deficiency of state of the art, provide a kind of and can produce continuous wave, the femtosecond double color double tuning laser that involves the double-colored coherent light of femtosecond light pulse continuously simultaneously.
The technical solution that adopts is so for achieving the above object: the continuous wave that is provided, femtosecond double color double tuning laser have an opump beam-splitting mirror, condenser lens and one one by double-colored chamber concave mirror, chamber concave mirror, laser crystal titanium jewel (Ti:Al
2O
3) and two resonant cavitys that the chamber completely reflecting mirror is formed, the opump beam-splitting mirror is divided into the 3:1 two-beam with pump light and by condenser lens two-beam is transported in the resonant cavity by double-colored chamber concave mirror, laser crystal titanium jewel is located on the output light path of double-colored chamber concave mirror, the chamber concave mirror is located on the output light path of laser crystal titanium jewel, a chamber completely reflecting mirror is located at laser crystal titanium jewel to the reflection output light path of chamber concave mirror output light path, and another chamber completely reflecting mirror is located at laser crystal titanium jewel to the reflected light path of double-colored chamber concave mirror output light path; In resonant cavity, be provided with a spread spectrum prism, two disperse compensating prisms, two tuned light hurdles and a femtosecond pulse outgoing mirror and a continuous wave outgoing mirror, wherein: the spread spectrum mirror places by the chamber concave mirror to the continuous wave output light path of chamber completely reflecting mirror, and the continuous wave light beam of being propagated out by this spread spectrum prism is incident upon on the continuous wave outgoing mirror through a tuned light hurdle; A disperse compensating prism places by the chamber concave mirror to the femtosecond light pulse output light path of chamber completely reflecting mirror, and the femtosecond light pulse of being propagated out by this disperse compensating prism is incident upon on the femtosecond pulse outgoing mirror behind another disperse compensating prism and another piece tuned light hurdle successively.In this laser works, the pump light of 488~530nm is divided into the 3:1 two-beam, by condenser lens two-beam is coupled into laser crystal by the double-colored concave mirror of resonant cavity again, excitation Ti:Al by the opump beam-splitting mirror
2O
3In Ti
3+By ground state
2T
2gTransit to excitation state
2E
g, produce Laser emission, so the vibration back and forth in resonant cavity of two bundle laser is just arranged, every vibration once all obtains gain from laser medium, at last by the light pulse of femtosecond pulse outgoing mirror output femtosecond, by continuous wave outgoing mirror output continuous wave laser.
Description of drawings
Accompanying drawing is the optical texture schematic diagram of one of the present invention specific embodiment.
Embodiment
Referring to accompanying drawing, continuous wave of the present invention, femtosecond double color double tuning laser contain opump beam-splitting mirror 1, condenser lens 2, double-colored chamber concave mirror 3, chamber concave mirror 4, chamber completely reflecting mirror 5 and 8, laser crystal titanium jewel (Ti:Al
2O
3) 14, disperse compensating prism 9 and 10, spread spectrum prism 13, tuned light hurdle 11 and 12 and optical components such as femtosecond pulse outgoing mirror 6 and continuous wave outgoing mirror 7.Resonant cavity by double-colored chamber concave mirror 3, chamber concave mirror 4, laser crystal titanium jewel 14 and chamber completely reflecting mirror 5,8 component devices, in the chamber on two concave mirrors 3,4 angle of two light beams less than 15 °, the radius of curvature of two mirrors is 100mm, and all plate 700~900nm laser dura mater that is all-trans, concerning double-colored chamber concave mirror 3, transmitance about 90% is arranged in 488~530nm scope; Also all be coated with 700~900nm laser dura mater that is all-trans on two chamber completely reflecting mirrors 5 and 8; Titanium gem crystal 14 places 15~18 ℃ water cooling environment by temperature control.Be arranged on spread spectrum prism 13 in the resonant cavity, disperse compensating prism 9 and 10, tuned light hurdle 11 and 12 and femtosecond pulse outgoing mirror 6 and continuous wave outgoing mirror 7 constitute the beam-splitting orientation device that these lasers involve the double-colored coherent light of femtosecond light pulse continuously, three prisms 9,10,13 are wherein formed disperse and are compensated synchronous double-colored coherent optical pulse prism sequence, and they are ZF10 glass or Shi Yingbolibushi prism; Be equipped with the slit of wide about 0.3mm on two tuned light hurdles, can about move with the micron order precision, the slit location on the mobile light hurdle can reach the purpose of tuning wavelength; Femtosecond pulse outgoing mirror 6 and continuous wave outgoing mirror 7 are all for by K
9The level crossing that glass or quartz glass are made, being coated with 700~900nm wavelength light transmitance in the mirror surface is 2%~3% laser dura mater.Be used to receive pump light and be the mirror body that a two sides all is coated with laser reflective film the opump beam-splitting mirror 1 that pump light is divided into two-beam, it is 25%~35% reflectance coating that its front is coated with 488~530nm wavelength light transmitance, and the back is coated with the film that is all-trans to 488~530nm wavelength light.Be used for the condenser lens 2 that input light focuses on the laser crystal 14 is located at opump beam-splitting mirror 1 between the light path of resonant cavity, its focal length is 120nm, two sides plating visible light anti-reflection film.
When actual product of the present invention makes up, at first all optical mirror slips are contained on the micropositioning stage, again micropositioning stage and annex all are installed in one with varying with temperature that the invar rod supports less than 10 by the accompanying drawing configuration
-6On m/ ℃ the steel alloy platform, each minute surface center is all on same horizontal plane, the total chamber of resonant cavity length is between 1.8~2.0m, distance between the disperse compensating prism 9 and 10 is about 43~45cm, two tuned light hurdles are respectively near about outgoing mirror 5cm, laser crystal titanium gem stick is φ 6 * 3~φ 6 * 10mm/mm, and the two sides is the Brewster angle cutting.The present invention adopts Ar
+Laser or vanadic acid Nd laser are as pumping source, with the pumping of 9W power laser, suitably carry out gain allocation, can produce laser generation, kerr lens mode locking is realized in the femtosecond laser chamber, gives off the femtosecond light pulse of width less than 100fs, the about 100mW of power by outgoing mirror 6, is given off the laser beam of the about 100mW of continuous wave by outgoing mirror 7, the dominant wavelength of laser is near 790nm, and its tuning range is not less than 120nm.
Claims (4)
1, a kind of continuous wave, femtosecond double color double tuning laser, it is characterized in that having an opump beam-splitting mirror (1), a condenser lens (2) and one one are by double-colored chamber concave mirror (3), chamber concave mirror (4), laser crystal titanium jewel (14) and two chamber completely reflecting mirrors (5,8) resonant cavity of Zu Chenging, opump beam-splitting mirror (1) is divided into 3: 1 two-beams with pump light and by condenser lens (2) two-beam is transported in the resonant cavity by double-colored chamber concave mirror (3), laser crystal titanium jewel (14) is located on the output light path of double-colored chamber concave mirror (3), chamber concave mirror (4) is located on the output light path of laser crystal titanium jewel (14), a chamber completely reflecting mirror (5) is located at laser crystal titanium jewel (14) to the reflection output light path of chamber concave mirror (4) output light path, and another chamber completely reflecting mirror (8) is located at laser crystal titanium jewel (14) to the reflection output light path of double-colored chamber concave mirror (3) output light path; In resonant cavity, be provided with a spread spectrum prism (13), two disperse compensating prisms (9,10), two tuned light hurdles (11,12) and a femtosecond pulse outgoing mirror (6) and a continuous wave outgoing mirror (7), wherein: spread spectrum prism (13) places by chamber concave mirror (4) to the continuous wave output light path of chamber completely reflecting mirror (5), and the continuous wave light beam of being propagated out by this spread spectrum prism (13) is incident upon on the continuous wave outgoing mirror (7) through a tuned light hurdle (12); A disperse compensating prism (9) places by chamber concave mirror (4) to the femtosecond light pulse output light path of chamber completely reflecting mirror (5), and the femtosecond light pulse of being propagated out by this disperse compensating prism (9) is incident upon on the femtosecond pulse outgoing mirror (6) behind another disperse compensating prism (10) and another piece tuned light hurdle (11) successively.
2, continuous wave as claimed in claim 1, femtosecond double color double tuning laser is characterized in that femtosecond pulse outgoing mirror (6) and continuous wave outgoing mirror (7) are all for by K
9The level crossing that glass or quartz glass are processed into, being coated with 700~900nm wavelength light transmitance in the mirror surface is 2%~3% laser dura mater.
3, continuous wave as claimed in claim 1, femtosecond double color double tuning laser, it is characterized in that being coated with 488~530nm wavelength light transmitance in opump beam-splitting mirror (1) front is 25%~35% reflectance coating, is coated with the film that is all-trans to 488~530nm wavelength light in opump beam-splitting mirror (1) back.
4, continuous wave as claimed in claim 1, femtosecond double color double tuning laser is characterized in that spread spectrum prism (13) and two disperse compensating prisms (9,10) are ZF10 or Shi Yingbolibushi prism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01131717 CN1233074C (en) | 2001-09-18 | 2001-09-18 | Continuous wave, femtosecond double-color double-tuned laser |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01131717 CN1233074C (en) | 2001-09-18 | 2001-09-18 | Continuous wave, femtosecond double-color double-tuned laser |
Publications (2)
Publication Number | Publication Date |
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CN1409449A CN1409449A (en) | 2003-04-09 |
CN1233074C true CN1233074C (en) | 2005-12-21 |
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CN 01131717 Expired - Fee Related CN1233074C (en) | 2001-09-18 | 2001-09-18 | Continuous wave, femtosecond double-color double-tuned laser |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN100375346C (en) * | 2003-12-31 | 2008-03-12 | 中国科学院西安光学精密机械研究所 | Core plug-in unit of multi-wavelength cross mode-locked femtosecond laser |
WO2024138756A1 (en) * | 2022-12-30 | 2024-07-04 | 深圳市镭神智能系统有限公司 | Laser radar, laser radar measurement method, electronic device, and readable storage medium |
-
2001
- 2001-09-18 CN CN 01131717 patent/CN1233074C/en not_active Expired - Fee Related
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