CN211743669U - Dual-wavelength laser capable of realizing three output modes - Google Patents
Dual-wavelength laser capable of realizing three output modes Download PDFInfo
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- CN211743669U CN211743669U CN202020506404.9U CN202020506404U CN211743669U CN 211743669 U CN211743669 U CN 211743669U CN 202020506404 U CN202020506404 U CN 202020506404U CN 211743669 U CN211743669 U CN 211743669U
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Abstract
The utility model discloses a can realize dual wavelength laser of three kinds of output methods, this dual wavelength laser includes: the laser oscillator comprises a laser light source module (10), a cavity mirror (11), a laser crystal (12), a first reflector (13), a first Q switch (14), a second reflector (15), a frequency doubling crystal (16), a sum frequency crystal (17), a first beam splitter (18), a second beam splitter (19), a third reflector (20), a second Q switch (21) and a third Q switch (22). The utility model provides a multi-wavelength laser's simple structure, compactness to can obtain the laser of two tunnel different wavelengths through frequency doubling crystal, sum frequency crystal, thereby obtain a laser instrument that small, simple structure and can provide two tunnel wavelengths.
Description
Technical Field
The utility model belongs to the technical field of laser equipment, concretely relates to can realize dual wavelength laser of three kinds of output mode.
Background
Laser has been a significant invention of humans since the 20 th century, following atomic energy, computers, semiconductors, called the "fastest knife", the principle of which was discovered by the famous american physicist einstein as early as 1916. The invention in the fourth 20 th century is 'laser, atomic energy, semiconductor, computer'. Lasers are now widely used in the medical field. The low-intensity laser irradiation treatment effect is confirmed by domestic and foreign experts through clinical verification. Is mainly used for treating brain diseases, cardiovascular diseases, diabetes, tumors, leukemia, mental diseases and the like.
However, how to provide a dual-wavelength laser with small volume, simple structure and high beam quality becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems existing in the prior art, the utility model provides a can realize the dual wavelength laser of three kinds of output modes. The to-be-solved technical problem of the utility model is realized through following technical scheme:
a dual wavelength laser capable of realizing three output modes, comprising: a laser light source module, a cavity mirror, a laser crystal, a first reflector, a first Q switch, a second reflector, a frequency doubling crystal, a sum frequency crystal, a first beam splitter, a second beam splitter, a third reflector, a second Q switch and a third Q switch,
the laser light source module, the chamber mirror, the laser crystal, first speculum are followed the output light path direction of laser light source module arranges the setting in proper order, first Q switch, the second speculum is followed the reverberation direction of first speculum arranges the setting in proper order, frequency doubling crystal, sum frequency crystal, first spectroscope, the second spectroscope, the third speculum is followed the reverberation direction of chamber mirror arranges the setting in proper order, the second Q switch is followed the reverberation direction of second spectroscope sets up, the third Q switch is followed the reverberation direction of third speculum sets up.
In an embodiment of the present invention, the laser source module includes a pump source, an optical coupling module, and an input mirror, which are arranged in sequence.
In an embodiment of the present invention, the optical coupling module includes a first lens and a second lens arranged in sequence.
In one embodiment of the present invention, the first Q-switch comprises an electro-optic Q-switch, an acousto-optic Q-switch, or a passive Q-switch.
In one embodiment of the present invention, the second Q-switch and the third Q-switch comprise electro-optical Q-switches.
The utility model discloses an embodiment, chamber mirror, the second mirror with the contained angle of first direction is 45o, the second spectroscope the third mirror is 135o with the contained angle of first direction, first spectroscope the second mirror is on a parallel with first direction.
In an embodiment of the present invention, the frequency doubling crystal includes LBO, KTP, or BBO.
In one embodiment of the present invention, the sum frequency crystal comprises LBO, KTP, or BBO.
The utility model has the advantages that:
the utility model provides a multi-wavelength laser's simple structure, compactness to can obtain the laser of two tunnel different wavelengths through frequency doubling crystal, sum frequency crystal, thereby obtain a laser instrument that small, simple structure and can provide two tunnel wavelengths.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of a dual-wavelength laser capable of implementing three output modes according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another dual-wavelength laser capable of implementing three output modes according to an embodiment of the present invention.
Description of reference numerals:
a laser light source module-10; an endoscope-11; laser crystal-12; a first mirror-13; a first Q-switch-14; a second mirror-15; frequency doubling crystal-16; sum frequency crystal-17; a first beam splitter-18; a second spectroscope-19; a third mirror-20; a second Q-switch-21; a third Q-switch-22; a pump source-101; an optical coupling module-102; an input mirror-103; a first lens-1021; a second lens-1022.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited thereto.
Example one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a dual-wavelength laser capable of implementing three output modes according to an embodiment of the present invention. This embodiment provides a can realize dual wavelength laser of three kinds of output mode, and this dual wavelength laser includes: a laser light source module 10, a cavity mirror 11, a laser crystal 12, a first reflector 13, a first Q switch 14, a second reflector 15, a frequency doubling crystal 16, a sum frequency crystal 17, a first beam splitter 18, a second beam splitter 19, a third reflector 20, a second Q switch 21 and a third Q switch 22, the laser light source module 10, the cavity mirror 11, the laser crystal 12, and the first reflector 13 are sequentially arranged along an output light path direction of the laser light source module 10, the first Q switch 14 and the second reflector 15 are sequentially arranged along a reflected light direction of the first reflector 13, the frequency doubling crystal 16, the sum frequency crystal 17, the first beam splitter 18, the second beam splitter 19, and the third reflector 20 are sequentially arranged along a reflected light direction of the cavity mirror 11, the second Q switch 21 is arranged along a reflected light direction of the second beam splitter 19, and the third Q switch 22 is arranged along a reflected light direction of the third reflector 20.
In the present embodiment, the laser light source module 10 provides pump light, for example, 808nm or 880 nm. The laser crystal 12 is, for example, Nd: YV 04.
In this embodiment, one surface of the cavity mirror 11 is plated with an anti-reflection film for pump light, the other surface is plated with an anti-reflection film for pump light and a high-reflection film for fundamental laser, one surface of the laser crystal 12 is plated with an anti-reflection film for pump light and fundamental laser, the other surface is plated with a high-reflection film for pump light and fundamental laser, one surface of the first reflector 13 is plated with a high-reflection film for fundamental laser, one surface of the second reflector 15 is plated with a high-reflection film for fundamental laser, one surface of the frequency doubling crystal 16 is plated with an anti-reflection film for fundamental laser and frequency doubling laser a1, one surface of the frequency summing crystal 17 is plated with an anti-reflection film for fundamental laser and frequency doubling laser a1, the other surface is plated with an anti-reflection film for fundamental laser, frequency doubling laser a1 and frequency summing laser a2, one surface of the first beam splitter 18 is plated with a high-reflection film for pump laser, frequency doubling laser a1 and an anti-reflection film for frequency summing laser a2, and an antireflection film for sum frequency laser a2, wherein one surface of the third mirror 20 is coated with a high reflection film for sum frequency laser a2, the reflectivity of the high reflection film may be 99.5, and the transmittance of the antireflection film may be 98%.
The pump light of this embodiment enters the laser crystal 12 through the cavity mirror 11 and is absorbed by the laser crystal 12, so as to generate a fundamental laser, the fundamental laser reaches the first Q switch 14 after being reflected by the first reflecting mirror 13, and is reflected back to the laser crystal 12 by the second reflecting mirror 15 and the first reflecting mirror 13 after being modulated by the first Q switch 14, so as to obtain a fundamental laser outputted by pulses, and then the fundamental laser is reflected to the frequency doubling crystal 16 by the cavity mirror 11, the fundamental laser generates a frequency doubling laser a1 through the frequency doubling crystal 16, the remaining fundamental laser and the frequency doubling laser a1 generate a sum frequency laser a2 through the sum frequency crystal 16, so that the fundamental laser oscillates in the oscillation cavity after being reflected by the first beam splitter 18, and the frequency doubling laser a1 and the sum frequency laser a2 which penetrate through the first beam splitter 18 jointly irradiate to the second beam splitter 19, the frequency doubling laser a1 is reflected by the second beam splitter 19 and outputted, and the sum frequency laser a2 penetrates, and then reflected by the third mirror 20 to be output, in addition, in the embodiment, the second Q-switch 21 is disposed in the reflection direction of the second beam splitter 19, so that the output of the frequency doubled laser light a1 can be controlled by whether or not a voltage is applied to the second Q-switch 21, and the third Q-switch 22 is disposed in the reflection direction of the third mirror 20, so that the output of the sum frequency laser light a2 can be controlled by whether or not a voltage is applied to the third Q-switch 22, where the base frequency laser light is, for example, 1064nm, the frequency doubled laser light a1 is, for example, 532nm, and the sum frequency laser light a2 is, for example, 355 nm.
Preferably, the included angle between the cavity mirror 11 and the second reflecting mirror 15 and the first direction is 45 °, the included angle between the second beam splitter 19 and the third reflecting mirror 20 and the first direction is 135 °, and the first beam splitter 18 and the second reflecting mirror 15 are parallel to the first direction, which may be, for example, a left direction or a right direction in a horizontal direction.
Preferably, the first Q-switch 14 may be an electro-optical Q-switch, an acousto-optical Q-switch, or a passive Q-switch.
Preferably, the second Q-switch 21 and the third Q-switch 22 may be electro-optical Q-switches.
Preferably, frequency doubling crystal 16 comprises LBO, KTP, or BBO.
Preferably, sum frequency crystal 17 comprises LBO, KTP or BBO.
Referring to fig. 2, further, the laser light source module 10 of the present embodiment may include a pumping source 101, an optical coupling module 102 and an input mirror 103 sequentially arranged along a first direction, where the optical coupling module 102 may include, for example, a first lens 1021 and a second lens 1022 sequentially arranged along the first direction, so that pumping light emitted by the pumping source 101 is collimated by the first lens 1021, then is converged to the input mirror 113 by the second lens 1022, and is input to the laser crystal 12 by the input mirror 113.
The utility model provides a multi-wavelength laser's simple structure, compactness to can obtain the laser of two tunnel different wavelengths through frequency doubling crystal, sum frequency crystal, thereby obtain a laser instrument that small, simple structure and can provide two tunnel wavelengths.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (8)
1. A dual wavelength laser capable of realizing three output modes, comprising: a laser light source module (10), a cavity mirror (11), a laser crystal (12), a first reflector (13), a first Q switch (14), a second reflector (15), a frequency doubling crystal (16), a sum frequency crystal (17), a first beam splitter (18), a second beam splitter (19), a third reflector (20), a second Q switch (21) and a third Q switch (22),
laser light source module (10), chamber mirror (11), laser crystal (12), first speculum (13) are followed the setting is arranged in proper order to the output light optical path direction of laser light source module (10), first Q switch (14), second speculum (15) are followed the setting is arranged in proper order to the reverberation direction of first speculum (13), frequency doubling crystal (16), sum frequency crystal (17), first spectroscope (18), second spectroscope (19), third speculum (20) are followed the setting is arranged in proper order to the reverberation direction of chamber mirror (11), second Q switch (21) are followed the reverberation direction setting of second spectroscope (19), third Q switch (22) are followed the reverberation direction setting of third speculum (20).
2. Dual wavelength laser as claimed in claim 1, characterized in that the laser light source module (10) comprises a pump source (101), an optical coupling module (102) and an input mirror (103) arranged in sequence.
3. The dual wavelength laser of claim 2, wherein the optical coupling module (102) has a first lens (1021) and a second lens (1022) arranged in series.
4. The dual wavelength laser of claim 1, wherein the first Q-switch (14) comprises an electro-optic Q-switch, an acousto-optic Q-switch, or a passive Q-switch.
5. Dual wavelength laser as claimed in claim 1, characterized in that the second Q-switch (21) and the third Q-switch (22) comprise electro-optical Q-switches.
6. Dual wavelength laser as claimed in claim 1, characterized in that said cavity mirror (11), said second mirror (15) and said first direction are at an angle of 45 °, said second beam splitter (19), said third mirror (20) and said first direction are at an angle of 135 °, said first beam splitter (18), said second mirror (15) being parallel to said first direction.
7. The dual wavelength laser of claim 1 wherein the frequency doubling crystal (16) comprises LBO, KTP, or BBO.
8. Dual wavelength laser according to claim 1, characterized in that the sum frequency crystal (17) comprises LBO, KTP or BBO.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020506404.9U CN211743669U (en) | 2020-04-08 | 2020-04-08 | Dual-wavelength laser capable of realizing three output modes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020506404.9U CN211743669U (en) | 2020-04-08 | 2020-04-08 | Dual-wavelength laser capable of realizing three output modes |
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| CN211743669U true CN211743669U (en) | 2020-10-23 |
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| CN202020506404.9U Active CN211743669U (en) | 2020-04-08 | 2020-04-08 | Dual-wavelength laser capable of realizing three output modes |
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