CN203645130U - High-power glass-doped laser device - Google Patents
High-power glass-doped laser device Download PDFInfo
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- CN203645130U CN203645130U CN201320872102.3U CN201320872102U CN203645130U CN 203645130 U CN203645130 U CN 203645130U CN 201320872102 U CN201320872102 U CN 201320872102U CN 203645130 U CN203645130 U CN 203645130U
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Abstract
The utility model relates to the technical field of laser and discloses a high-power glass-doped laser device. The high-power glass-doped laser device comprises a pump structure, a laser gain medium and an output coupling mirror, wherein the laser gain medium is an ultra-thin glass-doped disk, the rear reflective surface is plated with a film highly reflective to pump light and laser and together with the output coupling mirror, a laser resonant cavity is formed, and the front light passing surface is provided with a heat radiating substrate transparent to the pump light and the laser; the pump structure comprises a pump source, a collimation unit and a multi-reflection pump coupling unit, and the multi-reflection pump coupling unit comprises two spherical reflective coupling mirrors respectively located at two sides of the resonant cavity. As the laser gain medium which is the ultra-thin glass-doped disk and the heat radiating substrate high in heat conductivity are adopted, heat radiating performances are effectively improved on one hand, and on the other hand, the light output threshold is greatly reduced; and as the multi-reflection pump coupling unit with the spherical reflective coupling mirror structure is matched, the pump coupling efficiency is greatly improved, and the glass-doped laser high in power output is obtained.
Description
Technical field
The utility model relates to laser technology field, relates in particular to a kind of high power glass-doped laser.
Background technology
1.55 μ m laser of erbium glass laser are in safety range of human eye, with optical communication Window match, and in atmosphere infrared window, therefore it has important using value in fields such as laser warning, laser designation, laser ranging, measuring wind speed, laser radar, material analysis and laser medicines.But semiconductor pumped glass-doped laser, because glass conductive coefficient is little, the maximum pumping light intensity can bear is limited, has therefore limited the further raising of its laser output power, general many below 100 milliwatts.
Summary of the invention
The purpose of this utility model is to propose a kind of high power glass-doped laser, when having improved heat dispersion, has improved pumping efficiency, and simple in structure, is easy to batch making.
For achieving the above object, the technical scheme that the utility model provides is: a kind of high power glass-doped laser, comprises pumping configuration, gain medium and output coupling mirror.Wherein, gain medium is a ultra-thin glass doping disc, and its two plane is respectively back reflection face and front logical light face; Described back reflection face plates the highly reflecting films to pump light and laser, forms laserresonator with output coupling mirror; Described front logical light face is provided with a heat dispersion substrate to pump light and laser-light transparent; Described pumping configuration comprises pumping source, collimation unit and multiple reflections pumping coupling unit; Described multiple reflections pumping coupling unit comprises two spheric reflection coupling mirrors, lays respectively at described resonant cavity both sides; Wherein in the middle of a spheric reflection coupling mirror, be provided with a light hole, the pump light of described pumping source passes through this light hole incident after collimation unit collimation, incide on ultra-thin glass doping disc and carry out pumping through heat dispersion substrate, and by inciding on another spheric reflection coupling mirror after reflecting surface reflection thereafter, returned by this spheric reflection coupling mirror Yan Yuan road, between described two spheric reflection coupling mirrors and the back reflection face of ultra-thin glass doping disc, repeatedly carry out back reflective, ultra-thin glass doping disc is carried out to repeatedly pumping; The excited radiation light of ultra-thin glass doping disc after heat dispersion substrate by output coupling mirror Output of laser.
Further, described ultra-thin glass doping disc by reflecting surface be thereafter bonded in one heat sink on.
Further, described ultra-thin glass doping disc is ultra-thin er doped silica glasses sheet, and its thickness is 10
-5m to 10
-4the m order of magnitude.
Further, the logical light face of described heat dispersion substrate plates the anti-reflection film to pump light and laser.
Further, described output coupling mirror is a plano-concave mirror.
Further, between described heat dispersion substrate and output coupling mirror, be provided with one or more combinations in frequency-selecting optical element, frequency multiplication element or saturable absorber; Or described heat dispersion substrate is substituted by a saturable absorber.
Further, described heat dispersion substrate is the plain film with high thermal conductivity coefficient, and by in-depth optical cement, bonding or high temperature is bonded together with the front logical light face of described ultra-thin glass doping disc.
Further, described collimation unit is optical fiber collimator.
Further, described ultra-thin glass doping disc is Cr
4+: YAG, Yb:YAG, Er:glass, Er:Yb:glass, Nd:YVO4 or Nd:YAG.
Further, glass or the crystal of described heat dispersion substrate employing and the identical or different matrix of ultra-thin glass doping disc.
The beneficial effects of the utility model are: the utility model adopts the gain medium of ultra-thin glass doping disc to add the heat dispersion substrate with high thermal conductivity coefficient, has effectively improved heat dispersion on the one hand, can greatly reduce it on the other hand and go out photo threshold; The multiple reflections pumping coupling unit that coordinates spheric reflection coupling mirror structure, has improved pumping coupling efficiency greatly, can effectively improve laser power, obtains the glass-doped laser of high-power output.
Accompanying drawing explanation
Fig. 1 is the utility model laser embodiment mono-structural representation;
Fig. 2 is the utility model laser embodiment bis-structural representations.
Accompanying drawing indicates: 11, ultra-thin glass doping disc; 111, front logical light face; 112, back reflection face; 12, heat dispersion substrate; 13, heat sink; 14, output coupling mirror; 15, spheric reflection coupling mirror; 16, optical fiber collimator; 17, frequency-selecting optical element.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
The utility model adopts the gain medium of ultra-thin glass doping disc to add the heat dispersion substrate with high thermal conductivity coefficient, has effectively improved heat dispersion on the one hand, can greatly reduce it on the other hand and go out photo threshold; The multiple reflections pumping coupling unit that coordinates spheric reflection coupling mirror structure, has improved pumping coupling efficiency greatly, can effectively improve laser power, obtains the glass-doped laser of high-power output.
Concrete, this high power glass-doped laser, comprises pumping configuration, gain medium and output coupling mirror.Wherein, gain medium is a ultra-thin glass doping disc, and its two plane is respectively back reflection face and front logical light face.Back reflection face plates the highly reflecting films to pump light and laser, forms laserresonator with output coupling mirror; Front logical light face is provided with a heat dispersion substrate to pump light and laser-light transparent.Pumping configuration comprises pumping source, collimation unit and multiple reflections pumping coupling unit, and this multiple reflections pumping coupling unit comprises two spheric reflection coupling mirrors, lays respectively at resonant cavity both sides; Wherein in the middle of a spheric reflection coupling mirror, be provided with a light hole, the pump light of pumping source passes through this light hole incident after collimation unit collimation, incide on ultra-thin glass doping disc and carry out pumping through heat dispersion substrate, and by inciding on another spheric reflection coupling mirror after reflecting surface reflection thereafter, returned by this spheric reflection coupling mirror Yan Yuan road, between described two spheric reflection coupling mirrors and the back reflection face of ultra-thin glass doping disc, repeatedly carry out back reflective, ultra-thin glass doping disc is carried out to repeatedly pumping; The excited radiation light of ultra-thin glass doping disc after heat dispersion substrate by output coupling mirror Output of laser.
Embodiment mono-as shown in Figure 1, what the ultra-thin glass doping disc 11 of this embodiment adopted is ultra-thin er doped silica glasses sheet (Er:glass), thickness is 10
-5m to 10
-4the m order of magnitude, reflecting surface is bonded on one heat sink 13 thereafter, the bonding heat dispersion substrate 12 of front logical light face 111.That pumping source adopts is the multimode LD of 980nm wavelength, pump light becomes the collimated light beam that operating distance is long, optical quality is high behind collimation unit (optical fiber collimator 16), incides at a certain angle ultra-thin glass doping disc 11 gain mediums and it is encouraged.The back reflection face 112 of ultra-thin glass doping disc 11 plates the highly reflecting films to pump light and laser, to not have absorbed pump light to reflex on the spheric reflection coupling mirror 14 of multiple reflections pumping coupling unit, and carry out back reflective repeatedly between two spheric reflection coupling mirrors 14 and ultra-thin glass doping disc 11 back reflection faces 111, until pump light is absorbed completely by ultra-thin glass doping disc 11, so greatly improve the utilance of pump light.In pumping process, producing a large amount of heat will increase heat radiation by heat dispersion substrate 12 and heat sink 13, reduce heat accumulation, effectively improve the heat dispersion of laser.In this embodiment, output coupling mirror 14 is a plano-concave mirror, forms laserresonator with the back reflection face 111 of ultra-thin glass doping disc 11, and two spheric reflection coupling mirrors 14 of multiple reflections pumping coupling unit are distributed in this resonant cavity both sides symmetrically.The excited radiation light of ultra-thin glass doping disc 11 after heat dispersion substrate by output coupling mirror 14 Output of lasers.
Embodiment bis-as shown in Figure 2 inserts frequency-selecting optical element 17, as Vernier etalon or two silicon etalon, to realize the single-mode output of laser between the heat dispersion substrate 12 of embodiment mono-and output coupling mirror 14.Also can enter in resonant cavity interpolation one or more combinations in the laser diodes such as frequency-selecting optical element, frequency multiplication element or saturable absorber, realize frequency multiplication or Q-switched laser etc.Also can directly heat dispersion substrate be replaced with to saturable absorber, make passive Q-regulaitng laser.
In the various embodiments described above, also can plate the anti-reflection film to pump light and laser at the logical light face of heat dispersion substrate 12, this heat dispersion substrate 12 is for having the plain film of high thermal conductivity coefficient, with the front logical light face 111 of ultra-thin glass doping disc 11 can be by in-depth optical cement bonding or high temperature be bonded together.Heat dispersion substrate 12 materials can adopt the glass with ultra-thin glass doping disc 11 identical or different matrix, or the close crystal of thermal coefficient of expansion.Wherein, ultra-thin glass doping disc 11 can also adopt Cr
4+: the materials such as YAG, Yb:YAG, Er:Yb:glass, Nd:YVO4 or Nd:YAG.Pumping source can be single or multiple single mode pumping LD, or multimode pumping LD.
The gain medium of ultra-thin glass doping disc, can further reduce the absorption of gain medium to laser self.As Cr
4+: YAG crystal wafer, larger to the laser absorption of wavelength 1300-1510nm, if by gain medium attenuation, one way absorption loss will diminish so, can greatly reduce the photo threshold that of laser, can not be reduced in the difficulty of optical band bright dipping.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; the various variations of in the form and details the utility model being made, are protection range of the present utility model.
Claims (10)
1. a high power glass-doped laser, comprises pumping configuration, gain medium and output coupling mirror, it is characterized in that: described gain medium is a ultra-thin glass doping disc, and its two plane is respectively back reflection face and front logical light face; Described back reflection face plates the highly reflecting films to pump light and laser, forms laserresonator with output coupling mirror; Described front logical light face is provided with a heat dispersion substrate to pump light and laser-light transparent; Described pumping configuration comprises pumping source, collimation unit and multiple reflections pumping coupling unit; Described multiple reflections pumping coupling unit comprises two spheric reflection coupling mirrors, lays respectively at described resonant cavity both sides; Wherein in the middle of a spheric reflection coupling mirror, be provided with a light hole, the pump light of described pumping source passes through this light hole incident after collimation unit collimation, incide on ultra-thin glass doping disc and carry out pumping through heat dispersion substrate, and by inciding on another spheric reflection coupling mirror after reflecting surface reflection thereafter, returned by this spheric reflection coupling mirror Yan Yuan road, between described two spheric reflection coupling mirrors and the back reflection face of ultra-thin glass doping disc, repeatedly carry out back reflective, ultra-thin glass doping disc is carried out to repeatedly pumping; The excited radiation light of ultra-thin glass doping disc after heat dispersion substrate by output coupling mirror Output of laser.
2. high power glass-doped laser as claimed in claim 1, is characterized in that: described ultra-thin glass doping disc by reflecting surface be thereafter bonded in one heat sink on.
3. high power glass-doped laser as claimed in claim 1, is characterized in that: described ultra-thin glass doping disc is ultra-thin er doped silica glasses sheet, and its thickness is 10
-5m to 10
-4the m order of magnitude.
4. high power glass-doped laser as described in claim 1-3 any one, is characterized in that: the logical light face of described heat dispersion substrate plates the anti-reflection film to pump light and laser.
5. high power glass-doped laser as described in claim 1-3 any one, is characterized in that: described output coupling mirror is a plano-concave mirror.
6. high power glass-doped laser as described in claim 1-3 any one, is characterized in that: between described heat dispersion substrate and output coupling mirror, be provided with one or more combinations in frequency-selecting optical element, frequency multiplication element or saturable absorber; Or described heat dispersion substrate is substituted by a saturable absorber.
7. high power glass-doped laser as described in claim 1-3 any one, is characterized in that: described heat dispersion substrate is the plain film with high thermal conductivity coefficient, and by in-depth optical cement, bonding or high temperature is bonded together with the front logical light face of described ultra-thin glass doping disc.
8. high power glass-doped laser as described in claim 1-3 any one, is characterized in that: described collimation unit is optical fiber collimator; Described pumping source is single or multiple single modes or multimode pumping LD.
9. high power glass-doped laser as described in claim 1 or 2 any one, is characterized in that: described ultra-thin glass doping disc is Cr
4+: YAG, Yb:YAG, Er:glass, Er:Yb:glass, Nd:YVO4 or Nd:YAG.
10. high power glass-doped laser as claimed in claim 9, is characterized in that: described heat dispersion substrate adopts glass or the crystal with the identical or different matrix of ultra-thin glass doping disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872102.3U CN203645130U (en) | 2013-12-27 | 2013-12-27 | High-power glass-doped laser device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872102.3U CN203645130U (en) | 2013-12-27 | 2013-12-27 | High-power glass-doped laser device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742945A (en) * | 2016-04-29 | 2016-07-06 | 长春理工大学 | Microchip laser device |
| CN108732845A (en) * | 2017-04-19 | 2018-11-02 | 中国科学院理化技术研究所 | Frequency doubling crystal coupler |
| CN113566649A (en) * | 2021-08-06 | 2021-10-29 | 江苏亮点光电研究有限公司 | High-magnification laser beam expanding lens for shooting training and application thereof |
| WO2023284776A1 (en) * | 2021-07-13 | 2023-01-19 | 黄衍介 | Laser pumping apparatus including geometric light concentrator and heat insulator, and laser pumping system |
-
2013
- 2013-12-27 CN CN201320872102.3U patent/CN203645130U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742945A (en) * | 2016-04-29 | 2016-07-06 | 长春理工大学 | Microchip laser device |
| CN108732845A (en) * | 2017-04-19 | 2018-11-02 | 中国科学院理化技术研究所 | Frequency doubling crystal coupler |
| WO2023284776A1 (en) * | 2021-07-13 | 2023-01-19 | 黄衍介 | Laser pumping apparatus including geometric light concentrator and heat insulator, and laser pumping system |
| US11929593B2 (en) | 2021-07-13 | 2024-03-12 | National Tsing Hua University | Laser pumping device and system including geometric light concentrator and thermal insulator |
| CN113566649A (en) * | 2021-08-06 | 2021-10-29 | 江苏亮点光电研究有限公司 | High-magnification laser beam expanding lens for shooting training and application thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20171227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |