CN205319504U - Medical all -solid yellow laser - Google Patents
Medical all -solid yellow laser Download PDFInfo
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- CN205319504U CN205319504U CN201620044163.4U CN201620044163U CN205319504U CN 205319504 U CN205319504 U CN 205319504U CN 201620044163 U CN201620044163 U CN 201620044163U CN 205319504 U CN205319504 U CN 205319504U
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- laser
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- tinted
- gain media
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Abstract
The utility model discloses a medical all -solid yellow laser, include: the pumping source system is including semiconductor laser and the focus coupling lens system that connects gradually, the resonant cavity, it is sharp chamber, is located the output of focus coupling lens system, the resonant cavity is including input mirror, gain medium -, gold -tinted outgoing mirror, the light filter placed in proper order, the pumping light that semiconductor laser sent is focused on the coupling lens system and is focused the gain medium - who is located in the resonant cavity, gain medium - absorptive pumping light produces the oscillatory excitation at the resonant cavity and goes out gold -tinted laser, passes through gold -tinted outgoing mirror and light filter output gold -tinted laser in proper order. The utility model discloses a mix the dysprosium bismuth silicate as gain medium -, the terminal surface has plated first membrane system respectively around the gain medium - increases the absorption journey with the second membrane system, need not non -linear frequency the conversion process, has effectively improved gain medium - to pumping light absorption rate, has improved the stability of all solid state gold -tinted laser instrument.
Description
Technical field
This utility model relates to biomedical sector, and more specifically, this utility model relates to a kind of medicinal all-solid-state yellow laser.
Background technology
Yellow band (centre wavelength 580 nanometers, wave-length coverage 597--577 nanometer) laser close to the most sensitive wavelength (555nm) of human eye, this wave band has wide practical use in fields such as laser Sodium guide star, laser radar, laser medicine, stage performance, city view, national defense and military and scientific researches. In astronomical telescope, the alternative traditional sodium of laser of 589nm leads signal optical source; In military affairs, can be used for Space Object Detection and identification; Medically, the laser of 579nm is HbO2 Oxyhemoglobin absworption peak (577nm) closely, especially in ophthalmic diagnosis and treatment, compares the laser of other wavelength, and yellow laser wave band has remarkable advantage, has irreplaceable effect.
At present, Yellow light laser mainly has dual wavelength and frequency laser, fibre optic Raman laser and infrared wavelength frequency double laser etc. Dual wavelength and frequency laser, mode competition effect is substantially, resonator cavity film system is complicated, conversion efficiency is low, beam quality and less stable; Fibre optic Raman laser, due to stimulated Brillouin scattering and the non-linear broadening of live width, is not suitable for producing the laser output of high power narrow linewidth; The filming parameter of laserresonator chamber mirror is required harshness by infrared wavelength frequency double laser, and conversion efficiency is low, and gold-tinted laser output power is relatively low. Increasingly mature along with laser diode, semiconductor pumped all solid state laser is with advantages such as its high efficiency, long-life, miniaturization and high light beam qualities, have become as over and over 20 years, study one of laser instrument the most popular, most widely used, it is one of the lasing light emitter of new generation of at present most potentiality, becomes the main research and development direction of laser technology.
The method that realizes of solid-state Yellow light laser mainly has following three kinds: one to be adopt intracavity and frequency mode, obtaining gold-tinted output by the mode of intracavity and frequency, mode competition effect is substantially, resonator cavity film system is complicated, conversion efficiency is low, beam quality and less stable;Two is the mode adopting fiber Raman laser amplifier, and phase controlling precision prescribed is significantly high, systematic comparison is complicated; Three is the mode adopting Raman laser-doubled, there is extra heat effect in Raman crystal, is difficult to obtain good beam quality under relatively high pumping rate; The same stability to laser instrument that increases of heat effect causes large effect.
Utility model content
For the weak point existed in above-mentioned technology, this utility model provides a kind of medicinal all-solid-state yellow laser, employing mixes dysprosium bismuth silicate as gain media, gain media front/rear end is coated with the first film system respectively and the second film system increases absorption journey, without nonlinear frequency conversion process, between alleviation heat effect and absorbance while contradiction, it is effectively increased the gain media absorbance to pump light, improves the stability of all-solid-state yellow laser.
In order to realize according to these purposes of the present utility model and further advantage, this utility model is achieved through the following technical solutions:
Medicinal all-solid-state yellow laser described in the utility model, including:
Pumping source system, it includes the semiconductor laser and the focusing coupled lens system that are sequentially connected with;
Resonator cavity, it is chamber linearly, is positioned at the outfan of described focusing coupled lens system; Input mirror that described resonator cavity includes being sequentially placed, gain media, gold-tinted outgoing mirror, optical filter; Described resonator cavity also includes the refrigerating plant that described gain media is dispelled the heat;
Wherein, the pump light that described semiconductor laser sends is focused on, by described focusing coupled lens system, the described gain media being positioned in described resonator cavity; Described gain media absorptive pumping light, produces oscillatory excitation at described resonator cavity and goes out gold-tinted laser, sequentially pass through gold-tinted outgoing mirror and optical filter, export gold-tinted laser;
The front end face of described gain media is coated with the first film system, and the rear end face of described gain media is coated with the second film system; Described first film system includes high the first saturating rete of pump light and the second rete to gold-tinted anti-reflective; Described second film system includes to the high saturating third membrane layer of gold-tinted with to high the 4th anti-rete of pump light.
Preferably, the pump light that described semiconductor laser sends is 447nm blue light or the ultraviolet light of 457nm blue light or 284nm.
Preferably, described gain media is for mixing dysprosium bismuth silicate.
Preferably, the radius of curvature of described gold-tinted outgoing mirror is 50mm-100mm.
Preferably, described refrigerating plant includes:
Red copper radiator, it is wrapped in the side of described gain media;
Semiconductor cooler, it is connected to the bottom of described red copper radiator;
Fin, it is connected to the bottom of described refrigerator.
Preferably, also including Fabry-Perot (F-P) etalon for exporting stable single-frequency gold-tinted, described Fabry-Perot (F-P) etalon is between described gain media and described gold-tinted outgoing mirror;
Preferably, described focusing coupled lens system includes being sequentially located at the collimating mirror between described semiconductor laser and described input mirror and focus lamp.
This utility model at least includes following beneficial effect:
1) resonator cavity linearly chamber, simple in construction, stability and good reliability, it is simple to the replacing of optical element and debugging, the output performance being suitable for Yellow light laser is explored and parameter optimization;
2) front end face of gain media is coated with the first film system, and the rear end face of gain media is coated with the second film system; First film system includes high the first saturating rete of pump light and the second rete to gold-tinted anti-reflective;Second film system includes to the high saturating third membrane layer of gold-tinted with to high the 4th anti-rete of pump light; First time in gain media remaining pump light reflected back into gain medium again, is equivalent to add the absorption journey of gain media, it is achieved that longitudinal more uniform pumping, improves the gain media absorption efficiency to pump light by the first film system and the second film system; It is also beneficial to alleviate gain media end face heat load excessively serious, improves the stability of medicinal all-solid-state yellow laser; It addition, the first film system and the second film system increase pumping light power density, reduce loss;
3) gain media is for mixing dysprosium bismuth silicate, it is not necessary to nonlinear frequency conversion process, all can realize the output of gold-tinted laser by single step;
4) pump light is 447nm blue light or the ultraviolet light of 457nm blue light or 284nm, all can realize the output of gold-tinted laser; Wherein, the pumping source of 457nm blue light, there is higher pumping light power and brightness, promote output and the efficiency of medicinal all-solid-state yellow laser.
Part is embodied by further advantage of the present utility model, target and feature by description below, and part also will by being understood by those skilled in the art research of the present utility model and practice.
Accompanying drawing explanation
Fig. 1 is the structural representation of medicinal all-solid-state yellow laser described in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail, to make those skilled in the art can implement according to this with reference to description word.
Should be appreciated that used herein such as " have ", " comprising " and " including " term is not precluded from existence or the interpolation of other elements one or more or its combination.
As it is shown in figure 1, this utility model provides a kind of medicinal all-solid-state yellow laser, including: pumping source system 10, it includes the semiconductor laser 11 and the focusing coupled lens system 12 that are sequentially connected with; Resonator cavity 20, it is chamber linearly, is positioned at the outfan focusing on coupled lens system 12; Input mirror 21 that resonator cavity 20 includes being sequentially placed, gain media 22, gold-tinted outgoing mirror 23, optical filter 24; Resonator cavity 20 also includes the refrigerating plant 25 to gain media 22 heat radiation;
The pump light that semiconductor laser 11 sends is focused coupled lens system 12 and focuses on the gain media 22 being positioned in resonator cavity 20; Gain media 22 absorptive pumping light, produces vibration at resonator cavity 20, inspires gold-tinted laser, sequentially passes through gold-tinted outgoing mirror 23 and optical filter 24, exports gold-tinted laser.
The front end face of gain media 22 is coated with the first film system, and the rear end face of gain media 22 is coated with the second film system; First film system includes high the first saturating rete of pump light and the second rete to gold-tinted anti-reflective; Second film system includes to the high saturating third membrane layer of gold-tinted with to high the 4th anti-rete of pump light. First film system and the second film system are by for the first time in the remaining pump light of gain media 22 again reflected back into gain medium 22, be equivalent to add the absorption journey of gain media 22, achieve longitudinal more uniform pumping, improve the gain media 22 absorption efficiency to pump light, it is also beneficial to alleviate gain media 22 end face heat load excessively serious, improves the stability of medicinal all-solid-state yellow laser. It addition, the first film system and the second film system increase pumping light power density, reduce loss.
Resonator cavity 20 linearly chamber, simple in construction, stability and good reliability, it is simple to the replacing of optical element and debugging, the output performance being suitable for Yellow light laser is explored and parameter optimization.
In above-mentioned embodiment, semiconductor laser 11 is preferably GaN-LD (GalliumNitrideLaserDiode, gallium nitride semiconductor laser).
In above-mentioned embodiment, pumping source system 10 can be the pump light that a semiconductor laser 11 produces a wavelength, can also be multiple semiconductor laser 11 produce multiple pump light formed close bundle pump light, thus forming a high-power pumping source, be conducive to improve output.
In above-mentioned embodiment, inputting mirror 21 and gold-tinted outgoing mirror 23, the gold-tinted for vibration has high reflectance. Input mirror 21 is plane mirror, is coated with the pump light anti-reflection film more than 95%, and this film to the reflectance of 570-580nm spectral line more than 99.8%; Gold-tinted outgoing mirror 23 can be partially reflective for the gold-tinted of concussion, so that gold-tinted laser exports from resonator cavity 20.
In above-mentioned embodiment, pump light is filtered by optical filter 24, it is achieved gold-tinted laser exports.
As another embodiment of the present utility model, the pump light that semiconductor laser 11 sends is 447nm blue light or the ultraviolet light of 457nm blue light or 284nm. Pump light is 447nm blue light or the ultraviolet light of 457nm blue light or 284nm, all can realize the output of gold-tinted laser. Wherein, the pumping source of 457nm blue light, there is higher pumping light power and brightness, promote output and the efficiency of medicinal all-solid-state yellow laser.
As a kind of embodiment of the present utility model, gain media 22 is to mix dysprosium bismuth silicate, mixing dysprosium bismuth silicate is Dy:BSO, refer at BSO (BismuthSilicateCrystal, bi silicate crystals) in mix Dy (element dysprosium), so Dy:BSO refers to mixes dysprosium in base material bismuth silicate, it it is the product existed in prior art. Gain media 22, without nonlinear frequency conversion process, can realize the output of gold-tinted laser by single step.
As another embodiment of the present utility model, the radius of curvature of gold-tinted outgoing mirror 23 is 50mm-100mm.
As another embodiment of the present utility model, medicinal all-solid-state yellow laser also includes the refrigerating plant 25 to gain media 22 heat radiation, and refrigerating plant 25 includes: red copper radiator, and it is wrapped in the side of gain media 22; Semiconductor cooler, it is connected to the bottom of red copper radiator; Fin, it is connected to the bottom of refrigerator. Gain media 22 is dispelled the heat by refrigerating plant 25, alleviates heat effect.
As another embodiment of the present utility model, medicinal all-solid-state yellow laser also includes Fabry-Perot (F-P) etalon for exporting stable single-frequency gold-tinted, and Fabry-Perot (F-P) etalon is between gain media and gold-tinted outgoing mirror.
As another embodiment of the present utility model, focusing on coupled lens system 12 to include being sequentially located at the collimating mirror between semiconductor laser 11 and input mirror 21 and focus lamp, collimating mirror is used for preventing pump light from returning noise spectra of semiconductor lasers 11 from input mirror 21 and causes damage; Focus lamp makes pump light focus on.
Although embodiment of the present utility model is disclosed as above, but it is not restricted in description and embodiment listed utilization. It can be applied to various applicable field of the present utility model completely. Other amendment it is easily achieved for those skilled in the art. Therefore, under the general concept limited without departing substantially from claim and equivalency range, this utility model is not limited to specific details and shown here as the legend with description.
Claims (7)
1. a medicinal all-solid-state yellow laser, it is characterised in that including:
Pumping source system, it includes the semiconductor laser and the focusing coupled lens system that are sequentially connected with;
Resonator cavity, it is chamber linearly, is positioned at the outfan of described focusing coupled lens system; Input mirror that described resonator cavity includes being sequentially placed, gain media, gold-tinted outgoing mirror, optical filter; Described resonator cavity also includes the refrigerating plant that described gain media is dispelled the heat;
Wherein, the pump light that described semiconductor laser sends is focused on, by described focusing coupled lens system, the described gain media being positioned in described resonator cavity; Described gain media absorptive pumping light, produces oscillatory excitation at described resonator cavity and goes out gold-tinted laser, sequentially pass through gold-tinted outgoing mirror and optical filter, export gold-tinted laser;
The front end face of described gain media is coated with the first film system, and the rear end face of described gain media is coated with the second film system; Described first film system includes high the first saturating rete of pump light and the second rete to gold-tinted anti-reflective; Described second film system includes to the high saturating third membrane layer of gold-tinted with to high the 4th anti-rete of pump light.
2. medicinal all-solid-state yellow laser as claimed in claim 1, it is characterised in that
The pump light that described semiconductor laser sends is 447nm blue light or the ultraviolet light of 457nm blue light or 284nm.
3. medicinal all-solid-state yellow laser as claimed in claim 1, it is characterised in that
Described gain media is for mixing dysprosium bismuth silicate.
4. medicinal all-solid-state yellow laser as claimed in claim 1, it is characterised in that the radius of curvature of described gold-tinted outgoing mirror is 50mm-100mm.
5. the medicinal all-solid-state yellow laser as according to any one of claim 1-4, it is characterised in that described refrigerating plant includes:
Red copper radiator, it is wrapped in the side of described gain media;
Semiconductor cooler, it is connected to the bottom of described red copper radiator;
Fin, it is connected to the bottom of described refrigerator.
6. the medicinal all-solid-state yellow laser as according to any one of claim 1-4, it is characterized in that, also including Fabry-Perot (F-P) etalon for exporting stable single-frequency gold-tinted, described Fabry-Perot (F-P) etalon is between described gain media and described gold-tinted outgoing mirror.
7. the medicinal all-solid-state yellow laser as according to any one of claim 1-4, it is characterised in that described focusing coupled lens system includes being sequentially located at the collimating mirror between described semiconductor laser and described input mirror and focus lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620044163.4U CN205319504U (en) | 2016-01-18 | 2016-01-18 | Medical all -solid yellow laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620044163.4U CN205319504U (en) | 2016-01-18 | 2016-01-18 | Medical all -solid yellow laser |
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| Publication Number | Publication Date |
|---|---|
| CN205319504U true CN205319504U (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620044163.4U Withdrawn - After Issue CN205319504U (en) | 2016-01-18 | 2016-01-18 | Medical all -solid yellow laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470795A (en) * | 2016-01-18 | 2016-04-06 | 中国科学院苏州生物医学工程技术研究所 | All-solid-state yellow laser for medicine |
-
2016
- 2016-01-18 CN CN201620044163.4U patent/CN205319504U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470795A (en) * | 2016-01-18 | 2016-04-06 | 中国科学院苏州生物医学工程技术研究所 | All-solid-state yellow laser for medicine |
| CN105470795B (en) * | 2016-01-18 | 2018-07-10 | 中国科学院苏州生物医学工程技术研究所 | Medicinal all-solid-state yellow laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20180710 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20180710 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |