CN203660270U - Adjustable dye laser based on light fluid - Google Patents
Adjustable dye laser based on light fluid Download PDFInfo
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- CN203660270U CN203660270U CN201420013538.1U CN201420013538U CN203660270U CN 203660270 U CN203660270 U CN 203660270U CN 201420013538 U CN201420013538 U CN 201420013538U CN 203660270 U CN203660270 U CN 203660270U
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- liquid lens
- taper seat
- resonant cavity
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Abstract
The utility model discloses an adjustable dye laser based on light fluid, comprising a pumping light source, a working medium and a resonant cavity. A conical outer reflector and the resonant cavity are sequentially arranged in the direction of the optical axis of emergent light beams of the pumping light source. The resonant cavity is a transparent column body, and the inside of the cavity body of the resonant cavity is sequentially provided with a first optical reflector, a dye molecule suspension liquid area used as the working medium, a first liquid lens, a second liquid lens, a gas cavity and a second optical reflector along the direction of the optical axis. A first electrode and a second electrode used for adjusting the first liquid lens and the second liquid lens are respectively arranged in positions, corresponding to the first liquid lens and the second liquid lens, on the outer surface of the resonant cavity. A first conical inner reflector and a second conical inner reflector are arranged with the optical axis as the center axis of symmetry. The adjustable dye laser based on light fluid of the utility model has the advantages of controllable laser output mode, good beam quality, high flexibility and the like.
Description
Technical field
The utility model relates to optical technical field field, be specifically related to a kind of regulated and controled dye laser based on light fluid, be mainly used in the fields such as laser measurement, laser processing, laser guidance, laser medicine, spectral technique, optical-fibre communications, wireless light communication, optical micro-manipulation, optical microphotograph, light-matter interaction as LASER Light Source.
Background technology
Laser is to amplify or the device of launching that vibrates in the material that utilizes stimulated radiation principle that light is stimulated at some.The operation principle of various lasers is basic identical, and lasing essential condition is population upset and the loss of gain serious offense, so requisite part has driving source, has two parts of working media of metastable energy level in device.Excitation is to be energized into excitation state after working media absorbs external energy, creates conditions for realizing and maintaining population inversion.It is that stimulated radiation is occupied an leading position that working media has metastable level, thereby realizes light amplification.Part common in laser also has resonant cavity, and it can shorten the length of operation material well, can also regulate lasing pattern by changing cavity length, so generally laser all has resonant cavity.At present, there are many kinds of lasers, common are gas laser, solid state laser, liquid laser, semiconductor laser.
Microflow control technique obtained very large development in the last few years, and microflow control technique and optics are combined, and had formed new branch of science light stream control (Optofluidics).Formerly, in technology, there is the dye laser light source based on light stream control techniques, referring to a United States Patent (USP), United States Patent (USP) title: Mechanically tunable elastomeric optofluidic distributed feedback dye laser, the patent No.: US7,817,698, B2.This laser has advantages of suitable, but, still exist some essence not enough: 1) system adopts optical grating to form feedback, builds optical grating in three-dimensional optical waveguide, forms distributed Feedback system, and then formation optical resonator, and be microstructure, from making in essence system very high to preparation technology's requirement, prepare the complex procedures of laser like this, difficulty is large, whole system complexity; 2) once the optical microstructures in system forms, cannot change, optical resonator structures is unadjustable, like this, causes the pattern of Laser Output Beam unadjustable, has affected the light source scope of application and application flexibility; 3) formerly the pump mode in technology is the pumping of paraxonic asymmetric, pump beam side-irradiation is to gain of light region, and the region of containing dye molecule, affect the uniformity of pumping effect, whole stimulated radiation system has had asymmetry, affect Laser Output Beam quality, meanwhile, the pumping efficiency of light energy utilization is low.
Utility model content
The utility model is for above-mentioned the deficiencies in the prior art, a kind of regulated and controled dye laser based on light fluid is provided, have system form succinct, preparation technology simple, resonant cavity performance is adjustable, Output mode is controlled, good beam quality, axisymmetric optical pumping, the pumping efficiency of light energy utilization are high, applied widely, uses the features such as flexible.
A kind of regulated and controled dye laser based on light fluid, comprises pump light source, working media resonant cavity, and the optical axis direction of described pump light source outgoing beam is provided with taper seat external mirror and described resonant cavity successively; Described resonant cavity is transparent cylinder, and is provided with successively the first optical mirror, is less than the second optical mirror of described the first optical mirror as dye molecule suspension region, first liquid lens, second liquid lens, gas cavity and the reflectivity of described working media along described optical axis direction in the cavity of described resonant cavity; Be respectively equipped with the first electrode and the second electrode for regulating and controlling described first liquid lens and described second liquid lens at first liquid lens described in the outer surface of described resonant cavity and position corresponding to described second liquid lens; Centered by described optical axis, symmetry axis is also provided with the first taper seat internal reflector and the second taper seat internal reflector; The correspondence position on described optical axis is identical with described dye molecule suspension region for wherein said the second taper seat internal reflector, and described the second taper seat internal reflector has the reflecting surface that light beam is reflexed to described dye molecule suspension region perpendicular to described optical axis.
In technique scheme, basic conception is: light stream control and liquid lens are combined to form can regulate and control optical resonator, utilizes beam shaping to realize axial symmetry optical pumping simultaneously.Concrete scheme is as follows: a kind of regulated and controled dye laser based on light fluid, adopts light stimulus mode (pump light source irradiation working media) to excite generation laser.In the light beam exit direction of pump light source, be disposed with the first taper seat internal reflector, taper seat external mirror and the second taper seat internal reflector, wherein the first taper seat internal reflector and all symmetry axis settings centered by the optical axis of pump light source outgoing beam of the second taper seat internal reflector, and be hollow and annular.And taper seat external mirror is arranged on the optical axis of pump light source outgoing beam, so, first the outgoing beam of pump light source incides on the conical reflecting surface of taper seat external mirror in order, light beam is after the conical reflecting surface reflection of taper seat external mirror, light beam direct of travel departs from optical axis, and is incident to the reflecting surface of the first taper seat internal reflector.Light beam is incident to the reflecting surface of the second taper seat internal reflector again after the reflecting surface reflection of the first taper seat internal reflector.Because resonant cavity setting is arranged on optical axis, and the dye molecule suspension region (working media) in resonant cavity is identical at the correspondence position of optical axis with the second taper seat internal reflector, the reflecting surface of the second taper seat internal reflector can ensure again by incident beam the angle reflection with vertical optical axis simultaneously, so when light beam after the reflecting surface reflection of the second conical surface internal reflector by the dye molecule suspension region of inciding with the angle of vertical optical axis in resonant cavity, thereby improve the pumping efficiency of light energy utilization and laser beam quality.Wherein, the setting of taper seat external mirror, the first taper seat internal reflector and the second taper seat internal reflector is after above-mentioned parts, to obtain the exciting light source that converges perpendicular to optical axis for pump light source outgoing beam.
Cylindricality resonant cavity is arranged on optical axis, its inside is provided with the first mirror lens, dye molecule suspension region, first liquid lens, second liquid lens, gas cavity and the second mirror lens successively along optical axis direction, first liquid lens and second liquid lens are based on electrowetting principle, respectively by the lens control of the first electrode and the second electrode that is arranged on resonant cavity surface, by regulating the applied voltage of electrode, change the diopter of liquid lens, and then realize beam mode regulation and control, complete high light beam quality required mode Laser output.The setting of gas cavity is while change, to provide enough spaces for first liquid lens, second liquid lens.
Described taper seat external mirror, the first taper seat internal reflector and second beam incident surface of taper seat internal reflector and the angle of described optical axis are 45 °.When taper seat external mirror, the first taper seat internal reflector and second beam incident surface of taper seat internal reflector and the angle of described optical axis are 45 °, pump light source outgoing beam all can keep parallel or vertical with pump light source light beam exit direction at whole traveling process.
Described resonant cavity is cylindrical.Cylindrical cavity matches with the ring-type converging beam forming after the second taper seat speculum reflection, makes dye molecule suspension region (working media) be subject to light more even, and cylindrical cavity is convenient to processing simultaneously.
The first described electrode and the second electrode are the one of conductive film electrode, metal electrode.
The first described optical mirror and the second optical mirror are coated with multilayer dielectric film towards a side of described dye molecule suspension region plating.At the inner surface of the first optical mirror and the second optical mirror, multilayer dielectric film is set and can increases reflectivity, the minimizing light loss of laser on optical mirror.
Compared with prior art, advantage of the present utility model:
1) formerly system adopts optical grating to form feedback in technology, builds optical grating in three-dimensional optical waveguide, forms distributed Feedback system, and then formation optical resonator, preparation technology is required very high, prepare the complex procedures of laser, difficulty is large, whole system complexity; The laser the utility model proposes is to utilize light stream control and liquid lens to combine, and resonant cavity is cylindrical cavity, and two circular end surface are that high reflecting surface forms bulk of optical feedback resonant cavity, and system forms succinctly, preparation technology is simple;
2) once formerly in technology optical microstructures form, cannot change, optical resonator structures is unadjustable, like this, causes the pattern of Laser Output Beam unadjustable, has affected the light source scope of application and application flexibility; The regulated and controled dye laser of the utility model based on light fluid, wherein in resonant cavity, be disposed with dye molecule suspension region, two liquid lens and a gas cavity region, resonant cavity measure setup has two electrodes for regulating and controlling two liquid lens in chamber, thereby realizes the adjusting control of optical resonance condition and laser emitting pattern;
3) formerly pump beam side-irradiation, to gain of light region, affects the uniformity of pumping effect in technology, and whole stimulated radiation system has had asymmetry, affects Laser Output Beam quality, and meanwhile, the pumping efficiency of light energy utilization is low; In the utility model, incident pump beam forms the pumping of converging perpendicular to symmetry system having symmetry axle through taper seat external mirror, two conical surface internal reflectors successively, axisymmetric optical pumping, the pumping efficiency of light energy utilization is high, the utility model Output mode is controlled, good beam quality, expand the scope of application, improved use flexibility.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model embodiment.A kind of regulated and controled dye laser based on light fluid, in the light beam exit direction of pump light source 1, be disposed with the first taper seat internal reflector 3, taper seat external mirror 2 and the second taper seat internal reflector 4, and the optical axis included angle of the reflecting surface of the first taper seat internal reflector 3, taper seat external mirror 2 and the second taper seat internal reflector 4 and pump light source 1 outgoing beam is 45 °.The outgoing beam optical axis of pump light source 1 is provided with taper seat external mirror 2 and cylindrical quartz material resonant cavity 5, resonant cavity 5 is provided with the first mirror lens 501, dye molecule suspension region 6, first liquid lens 7, second liquid lens 8, gas cavity 9 and the second mirror lens 504 successively along pump light source 1 light beam exit direction, and on the outer surface of resonant cavity 5, the correspondence position of first liquid lens 7 and second liquid lens 8 is respectively equipped with the first electrode 502 and the second electrode 503.Wherein, the second taper seat internal reflector 4 is identical with the correspondence position of dye molecule suspension region 6 on pump light source 1 outgoing beam optical axis.
In the present embodiment, the bottom disc diameter of taper seat external mirror 2 is 10 millimeters; The first taper seat internal reflector 3 is identical with the second taper seat internal reflector 4 structures, thickness is 5 millimeters, taper seat internal diameter diameter is 35 millimeters, taper seat external diameter diameter is 40 millimeters, the first taper seat internal reflector 3 is penetrated film, the reflectivity of the first optical mirror 501 is that the reflectivity of 98%, the second optical mirror 504 is 94%; Dye molecule suspension region 6 is for rhodamine 6G molecule is distributed in distilled water, and first liquid lens 7 are that transparent oil body lens, second liquid lens 8 are water-soluble liquid lens, and the first electrode 502 and the second electrode 503 are ITO film conductive electrode.It is the light beam of 532 nanometers that pump beam adopts the wavelength of frequency multiplication YAG laser emitting, and beam diameter is 4 millimeters.
The course of work of the utility model device is: YAG laser emitting light beam is propagated along optical axis, through taper seat external mirror 2 reflect to form radial spread disc light beam, deviate from optical axis and propagate, again through the reflection of the first taper seat internal reflector 3 and the second taper seat internal reflector 4, form the disc light beam converging to optical axis, light beam converge the dye molecule suspension region 6 that region is cylindrical cavity 5, rhodamine 6G molecule in dye molecule suspension region 6 is received and is excited and emitting fluorescence, fluorescence carries out multiple reflections in the cavity of cylindrical cavity 5 from the first optical mirror 501 to second optical mirrors 504, repeatedly carry out repeatedly stimulated radiation through dye molecule suspension region 6, in the time that pump light source 1 luminous power is greater than system loss threshold value, system gain is greater than loss, system has laser emitting, in this laser device, between cylindrical cavity 5 outside the first electrodes 502 and the second electrode 503, add voltage, regulate first liquid lens 7 and second liquid lens 8, and then optical parametric and the distribution thereof of resonant cavity 5 are changed, thereby realize the pattern of regulation and control outgoing laser beams, obtained the required mode of high light beam quality.The present embodiment has successfully been realized the high-quality basic mode output of 570 nanometers, and that the system that the utlity model has forms is succinct, preparation technology is simple, resonant cavity performance is adjustable, Output mode is controlled, good beam quality, axial symmetry optical pumping, pumping efficiency of light energy utilization high.
Above-described embodiment has been described in detail the technical solution of the utility model and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present utility model; be not limited to the utility model; all any amendments of making within the scope of principle of the present utility model, supplement and be equal to replacement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. the regulated and controled dye laser based on light fluid, comprises pump light source, working media resonant cavity, it is characterized in that, the optical axis direction of described pump light source outgoing beam is provided with taper seat external mirror and described resonant cavity successively; Described resonant cavity is transparent cylinder, and is provided with successively the first optical mirror, is less than the second optical mirror of described the first optical mirror as dye molecule suspension region, first liquid lens, second liquid lens, gas cavity and the reflectivity of described working media along described optical axis direction in the cavity of described resonant cavity; Be respectively equipped with the first electrode and the second electrode for regulating and controlling described first liquid lens and described second liquid lens at first liquid lens described in the outer surface of described resonant cavity and position corresponding to described second liquid lens; Centered by described optical axis, symmetry axis is also provided with the first taper seat internal reflector and the second taper seat internal reflector; The correspondence position on described optical axis is identical with described dye molecule suspension region for wherein said the second taper seat internal reflector, and described the second taper seat internal reflector has the reflecting surface that light beam is reflexed to described dye molecule suspension region perpendicular to described optical axis.
2. a kind of regulated and controled dye laser based on light fluid according to claim 1, it is characterized in that, described taper seat external mirror, the first taper seat internal reflector and second beam incident surface of taper seat internal reflector and the angle of described optical axis are 45 °.
3. a kind of regulated and controled dye laser based on light fluid according to claim 1, is characterized in that, described resonant cavity is cylindrical.
4. a kind of regulated and controled dye laser based on light fluid according to claim 1, is characterized in that, the first described electrode and the second electrode are the one of conductive film electrode, metal electrode.
5. a kind of regulated and controled dye laser based on light fluid according to claim 1, it is characterized in that, the first described optical mirror and the second optical mirror are all coated with the reflectance coating of multilayer dielectric film towards a side of described dye molecule suspension region plating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013538.1U CN203660270U (en) | 2014-01-07 | 2014-01-07 | Adjustable dye laser based on light fluid |
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| CN201420013538.1U CN203660270U (en) | 2014-01-07 | 2014-01-07 | Adjustable dye laser based on light fluid |
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| CN201420013538.1U Expired - Fee Related CN203660270U (en) | 2014-01-07 | 2014-01-07 | Adjustable dye laser based on light fluid |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746286A (en) * | 2014-01-07 | 2014-04-23 | 高秀敏 | Adjustable and controllable dye laser based on light fluid |
| CN105762642A (en) * | 2015-11-10 | 2016-07-13 | 天津工业大学 | Method for fixing high-flow-velocity laser dye cell optical window sheet |
| CN105762639A (en) * | 2016-05-11 | 2016-07-13 | 哈尔滨医科大学 | High cutting laser |
-
2014
- 2014-01-07 CN CN201420013538.1U patent/CN203660270U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746286A (en) * | 2014-01-07 | 2014-04-23 | 高秀敏 | Adjustable and controllable dye laser based on light fluid |
| CN105762642A (en) * | 2015-11-10 | 2016-07-13 | 天津工业大学 | Method for fixing high-flow-velocity laser dye cell optical window sheet |
| CN105762639A (en) * | 2016-05-11 | 2016-07-13 | 哈尔滨医科大学 | High cutting laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Gao Xiumin Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20160107 |