CN101834404B - Tunable solid laser adopting double-doped oxyborate calcium rare-earth salt crystal - Google Patents
Tunable solid laser adopting double-doped oxyborate calcium rare-earth salt crystal Download PDFInfo
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- CN101834404B CN101834404B CN 200910111240 CN200910111240A CN101834404B CN 101834404 B CN101834404 B CN 101834404B CN 200910111240 CN200910111240 CN 200910111240 CN 200910111240 A CN200910111240 A CN 200910111240A CN 101834404 B CN101834404 B CN 101834404B
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- 239000013078 crystal Substances 0.000 title claims abstract description 50
- -1 calcium rare-earth salt Chemical class 0.000 title claims abstract description 23
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 23
- 239000007787 solid Substances 0.000 title claims abstract description 16
- 239000011575 calcium Substances 0.000 title claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 17
- 229910001428 transition metal ion Inorganic materials 0.000 claims description 13
- 238000009738 saturating Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 10
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 229910021645 metal ion Inorganic materials 0.000 abstract 3
- 230000007704 transition Effects 0.000 abstract 3
- 150000002500 ions Chemical class 0.000 description 9
- 238000002310 reflectometry Methods 0.000 description 8
- 241000931526 Acer campestre Species 0.000 description 5
- 238000005498 polishing Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- DWDDCROEBRKXIF-UHFFFAOYSA-N O.O.O.B(O)(O)O Chemical compound O.O.O.B(O)(O)O DWDDCROEBRKXIF-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention relates to a tunable solid laser adopting a double-doped oxyborate calcium rare-earth salt crystal, belonging to the field of laser crystals and devices. Fundamental wave laser wavelength is in the effective absorption band of metal ions of the transition family in the crystal by utilizing an oxyborate calcium rare-earth salt nonlinear laser crystal doped with rare earth ions and the metal ions of the transition family by utilizing the crystal has the characteristics of both stimulated emission and nonlinear optical property by adopting infrared light which can be effectively absorbed by rare-earth ions in the crystal as a pumping source through determining the self-frequency doubling phase matching direction in which the fundamental wave laser wavelength is, and metal ions of the transition family output tunable lasers after absorbing frequency doubling light. The tunable solid laser comprises a single laser crystal, tuning components and a laser resonator mirror and has simple and compact structure, high stability and high reliability.
Description
Technical field
The present invention relates to laser crystal and devices field.
Background technology
Tunable laser is used widely in a lot of fields because its Output of laser wavelength is adjustable continuously in the hundreds of nanometer range.Compare with Dye laser of tunable, solid-state tunable laser long service life, beam quality height are the developing direction of Tunable Laser Technology.Titanium-doped sapphire laser wherein is celebrated greatly with tuning wavelength wide ranges, conversion efficiency height, power output.It typically constitutes: utilize near the semiconductor pumped laser crystal Nd of output wavelength GaAlAs 808nm
3+: YVO
4Or Nd
3+: YAG produces the laser of 1064nm wavelength, obtains the 532nm green laser through nonlinear optical crystal KTP or LBO frequency multiplication, uses this green laser pumping tunable laser crystal Ti again
3+: Al
2O
3And final output is arrived the tunable laser of 1200nm wave-length coverage at 700nm.This laser system needs two blocks of laser crystals and a nonlinear optical crystal, and device architecture is complicated, and is difficult in maintenance, and stability and reliability are all poor, and price comparison is expensive, and is also higher to the requirement of environment for use, all can't use in a lot of fields.Published patent of invention CN1492548A is and the immediate prior art of the application, but employed gain medium is different from the present invention in this technical scheme.
Summary of the invention
The objective of the invention is only to utilize the boric acid oxygen calcium rare earth salt non-linear laser crystal of a double rare-earth-mixed ion and transition-metal ion as gain media, utilize this crystalloid to have simultaneously the characteristic of stimulated emission and non-linear optical property, employing can be by the effective infrared light that absorbs of the rare earth ion in this crystal as pumping source, by determine this crystal fundamental wave of laser wavelength place from the multiple frequency phase matching direction, the fundamental wave of laser wavelength is in effective absorption band of transition-metal ion in the crystal after this crystal self frequency multiplication, and transition-metal ion is exported tunable Solid State Laser after absorbing this frequency doubled light.
The present invention includes following technical scheme:
Adopt the tunable solid laser of double-doped oxyborate calcium rare-earth salt crystal, formed by double-doped non-linear laser crystal, the wavelength tuning element of infrared light pumping system, doping with rare-earth ions and transition-metal ion and the laser mirror that plates deielectric-coating.This laser only adopts a double-doped non-linear laser crystal as laser medium, and employing can by the effective infrared light that absorbs of the rare earth ion in this double-doped non-linear laser crystal as pumping source, realize tunable Solid State Laser output; This double-doped non-linear laser crystal carries out directional cutting according to fundamental wave of laser from multiple frequency phase coupling needs, makes its incident and outgoing end face and required phase matched perpendicular direction.This laser is characterised in that: the double-doped non-linear laser crystal of employing is R
xRe
yY
1-x-yCa
4O (BO
3)
3Or R
xRe
yGd
1-x-yCa
4O (BO
3)
3, 0.005≤x≤0.01,0.05≤y≤0.3 wherein, R is transition-metal ion Cr
3+Or Ti
3+, Re is rare earth ion Nd
3+Or Yb
3+
The anti-reflection film of both ends of the surface plating infrared pump light, rare earth ion fundamental wave and the transition-metal ion tunable laser of described double-doped non-linear laser crystal.
Directly will be high anti-to the frequency doubled light of rare earth ion, the high saturating deielectric-coating of transition-metal ion tunable laser is plated in described double-doped non-linear laser crystal on the end face of wavelength tuning element.
A kind of essential structure of this solid-state tunable laser as shown in drawings, wherein 1 is the double-doped oxyborate calcium rare-earth salt non-linear laser crystal, its optical direction is consistent with the phase matched direction of frequency multiplication rare earth ion fundamental wave of laser; The 2nd, the incident plated film chamber mirror of laser cavity; The 3rd, high anti-to the frequency doubled light of rare earth ion, to the high saturating plated film sheet of transition-metal ion tunable laser; The 4th, transition-metal ion optical maser wavelength is carried out tuning element or elements combination; The 5th, the outgoing plated film chamber mirror of laser cavity; The 6th, the infrared light incident direction of end pumping; The 7th, the infrared light incident direction of side-pumping; The 8th, the tunable laser exit direction.
The beneficial effect that utilizes the tunable solid laser of technical solution of the present invention manufacturing to have is that Laser Devices are compacter, overcome to a great extent the complexity of device manufacturing, maintenance, adjustment, manufacturing and maintenance cost have been reduced, improve stability and the reliability of running, will further expand the application of tunable Solid State Laser.
Description of drawings
Accompanying drawing is two line borate oxonium salt crystal tunable laser structure sketches of mixing.
Embodiment
The two Nd that mix of the infrared light end pumping of example 1:807nm wavelength
3+And Cr
3+GdCa
4O (BO
3)
3Non-linear laser crystal produces 650nm to the tunable Solid State Laser of 800nm wave-length coverage.
Double-doped non-linear laser crystal Nd
0.07Cr
0.01Gd
0.92Ca
4O (BO
3)
3Both ends of the surface along perpendicular to from the multiple frequency phase matching angle (θ=66.8 °,
) directional cutting, determine that simultaneously the size of crystal (is generally φ 5 * 12mm
3Cylinder), end face polishing is placed between incident chamber mirror 2 and the diaphragm 3.Incident plated film chamber mirror 2 is high saturating, Nd near pump light wavelength 807nm
3+Ion first-harmonic optical maser wavelength 1064nm is neighbouring, frequency doubled light 532nm is neighbouring, Cr
3+Ion laser tuning range 650nm is to 800nm high anti-(reflectivity R＞99%); Diaphragm 3 at high anti-(reflectivity R＞99%), 650nm near the 1064nm, near the 532nm to 800nm tuning range height thoroughly.Tuned cell 3 can adopt effective tuning wavelength scope at birefringent filter, grating or the prism etc. of 650nm to 800nm, and plated film chamber mirror 5 (is determined according to the infrared light pump power) between 1% to 10% to the transmitance of 800nm tuning range at 650nm.This is one and is suitable for the 807nm infrared light along direction 6 end pumpings, the tunable solid laser simple in structure along direction 8 output 650nm to 800nm.
The two Yb that mix of the infrared light end pumping of example 2:976nm wavelength
3+And Ti
3+GdCa
4O (BO
3)
3Non-linear laser crystal produces 700nm to the tunable laser of 950nm wave-length coverage.
Double-doped non-linear laser crystal Yb
0.3Ti
0.005Gd
0.695Ca
4O (BO
3)
3Both ends of the surface along perpendicular to from the multiple frequency phase matching angle (θ=67 °,
) directional cutting, determine that simultaneously the size of crystal (is generally φ 5 * 12mm
3Cylinder), end face polishing is placed between incident chamber mirror 2 and the diaphragm 3.Incident plated film chamber mirror 2 is high saturating, Yb near pump light wavelength 976nm
3+Ion first-harmonic optical maser wavelength 1040nm is neighbouring, frequency doubled light 520nm is neighbouring, Ti
3+Ion laser tuning range 700nm is to 950nm high anti-(reflectivity R＞99%); Diaphragm 3 at high anti-(reflectivity R＞99%), 700nm near the 1040nm, near the 520nm to 950nm tuning range height thoroughly.Tuned cell 3 can adopt effective tuning wavelength scope at birefringent filter, grating or the prism etc. of 700nm to 950nm, and plated film chamber mirror 5 (is determined according to the infrared light pump power) between 1% to 10% to the transmitance of 950nm tuning range at 700nm.This is one and is suitable for the 976nm infrared light along direction 6 end pumpings, the tunable solid laser simple in structure along direction 8 output 700nm to 950nm.
The two Nd that mix of the infrared light end pumping of example 3:807nm wavelength
3+And Cr
3+YCa
4O (BO
3)
3Non-linear laser crystal produces 650nm to the tunable laser of 800nm wave-length coverage.
Double-doped non-linear laser crystal Nd
0.05Cr
0.01Y
0.94Ca
4O (BO
3)
3Both ends of the surface along perpendicular to from the multiple frequency phase matching angle (θ=66.8 °,
) directional cutting, determine that simultaneously the size of crystal (is generally φ 5 * 12mm
3Cylinder), end face polishing is placed between incident chamber mirror 2 and the diaphragm 3.Incident plated film chamber mirror 2 is high saturating, Nd near pump light wavelength 807nm
3+Ion first-harmonic optical maser wavelength 1064nm is neighbouring, frequency doubled light 532nm is neighbouring, Cr
3+Ion laser tuning range 650nm is to 800nm high anti-(reflectivity R＞99%); Diaphragm 3 at high anti-(reflectivity R＞99%), 650nm near the 1064nm, near the 532nm to 800nm tuning range height thoroughly.Tuned cell 3 can adopt effective tuning wavelength scope at birefringent filter, grating or the prism etc. of 650nm to 800nm, and plated film chamber mirror 5 (is determined according to the infrared light pump power) between 1% to 10% to the transmitance of 800nm tuning range at 650nm.This is one and is suitable for the 807nm infrared light along direction 6 end pumpings, the tunable solid laser simple in structure along direction 8 output 650nm to 800nm.
The two Yb that mix of the infrared light end pumping of example 4:976nm wavelength
3+And Ti
3+YCa
4O (BO
3)
3Non-linear laser crystal produces 700nm to the tunable laser of 950nm wave-length coverage.
Double-doped non-linear laser crystal Yb
0.2Ti
0.005Gd
0.795Ca
4O (BO
3)
3Both ends of the surface along perpendicular to from the multiple frequency phase matching angle (θ=67 °,
) directional cutting, determine that simultaneously the size of crystal (is generally φ 5 * 12mm
3Cylinder), end face polishing is placed between incident chamber mirror 2 and the diaphragm 3.Incident plated film chamber mirror 2 is high saturating, Yb near pump light wavelength 976nm
3+Ion first-harmonic optical maser wavelength 1040nm is neighbouring, frequency doubled light 520nm is neighbouring, Ti
3+Ion laser tuning range 700nm is to 950nm high anti-(reflectivity R＞99%); Diaphragm 3 at high anti-(reflectivity R＞99%), 700nm near the 1040nm, near the 520nm to 950nm tuning range height thoroughly.Tuned cell 3 can adopt effective tuning wavelength scope at birefringent filter, grating or the prism etc. of 700nm to 950nm, and plated film chamber mirror 5 (is determined according to the infrared light pump power) between 1% to 10% to the transmitance of 950nm tuning range at 700nm.This is one and is suitable for the 976nm infrared light along direction 6 end pumpings, the tunable solid laser simple in structure along direction 8 output 700nm to 950nm.
Claims (3)
1. adopt the tunable solid laser of double-doped oxyborate calcium rare-earth salt crystal, formed by double-doped non-linear laser crystal, the wavelength tuning element of infrared light pumping system, doping with rare-earth ions and transition-metal ion and the laser mirror that plates deielectric-coating, this laser only adopts a double-doped non-linear laser crystal as laser medium, employing can by the effective infrared light that absorbs of the rare earth ion in this double-doped non-linear laser crystal as pumping source, realize tunable Solid State Laser output; This double-doped non-linear laser crystal carries out directional cutting according to fundamental wave of laser from multiple frequency phase coupling needs, makes its incident and outgoing end face and required phase matched perpendicular direction, and this laser is characterised in that: the double-doped non-linear laser crystal of employing is R
xRe
yY
1-x-yCa
4O (BO
3)
3Or R
xRe
yGd
1-x-yCa
4O (BO
3)
3, 0.005≤x≤0.01,0.05≤y≤0.3 wherein, R is transition-metal ion Cr
3+Or Ti
3+, Re is rare earth ion Nd
3+Or Yb
3+
2. laser as claimed in claim 1 is characterized in that: the anti-reflection film of both ends of the surface plating infrared pump light, rare earth ion fundamental wave and the transition-metal ion tunable laser of described double-doped non-linear laser crystal.
3. laser as claimed in claim 1 is characterized in that: directly will be high anti-to the frequency doubled light of rare earth ion, the high saturating deielectric-coating of transition-metal ion tunable laser is plated in described double-doped non-linear laser crystal on the end face of wavelength tuning element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910111240 CN101834404B (en) | 2009-03-13 | 2009-03-13 | Tunable solid laser adopting double-doped oxyborate calcium rare-earth salt crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910111240 CN101834404B (en) | 2009-03-13 | 2009-03-13 | Tunable solid laser adopting double-doped oxyborate calcium rare-earth salt crystal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101834404A CN101834404A (en) | 2010-09-15 |
| CN101834404B true CN101834404B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910111240 Expired - Fee Related CN101834404B (en) | 2009-03-13 | 2009-03-13 | Tunable solid laser adopting double-doped oxyborate calcium rare-earth salt crystal |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110607558A (en) * | 2019-10-17 | 2019-12-24 | 中国工程物理研究院化工材料研究所 | Ytterbium-doped calcium borate gadolinium yttrium mixed crystal laser crystal and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388114A (en) * | 1994-03-17 | 1995-02-07 | Polaroid Corporation | Miniaturized self-Q-switched frequency-doubled laser |
| US5677921A (en) * | 1995-03-24 | 1997-10-14 | The Regents Of The University Of California | Ytterbium-doped borate fluoride laser crystals and lasers |
| CN1492548A (en) * | 2002-10-22 | 2004-04-28 | 中国科学院福建物质结构研究所 | Solid tunable laser |
| CN1645691A (en) * | 2005-02-02 | 2005-07-27 | 中国科学院物理研究所 | Active and passive Q-adjusted single longitudinal mode laser |
-
2009
- 2009-03-13 CN CN 200910111240 patent/CN101834404B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388114A (en) * | 1994-03-17 | 1995-02-07 | Polaroid Corporation | Miniaturized self-Q-switched frequency-doubled laser |
| US5677921A (en) * | 1995-03-24 | 1997-10-14 | The Regents Of The University Of California | Ytterbium-doped borate fluoride laser crystals and lasers |
| CN1492548A (en) * | 2002-10-22 | 2004-04-28 | 中国科学院福建物质结构研究所 | Solid tunable laser |
| CN1645691A (en) * | 2005-02-02 | 2005-07-27 | 中国科学院物理研究所 | Active and passive Q-adjusted single longitudinal mode laser |
Non-Patent Citations (1)
| Title |
|---|
| 张树君等.新型激光自倍频晶体Cr：Nd：GdCa4O(BO3)3.《人工晶体学报》.1999, * |
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| Publication number | Publication date |
|---|---|
| CN101834404A (en) | 2010-09-15 |
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Granted publication date: 20130417 |