CN211700920U - Coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output - Google Patents
Coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output Download PDFInfo
- Publication number
- CN211700920U CN211700920U CN202020361346.5U CN202020361346U CN211700920U CN 211700920 U CN211700920 U CN 211700920U CN 202020361346 U CN202020361346 U CN 202020361346U CN 211700920 U CN211700920 U CN 211700920U
- Authority
- CN
- China
- Prior art keywords
- laser
- beam path
- light
- infrared
- wave plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The utility model discloses a coaxial emitter for realizing near infrared and mid-infrared laser switching output, which comprises a light beam path conversion component, wherein the light beam path conversion component is used for realizing the conversion of incident laser between a first light beam path and a second light beam path; the first light beam path is used for outputting 1.06 mu m wave band laser, and the second light beam path is used for outputting 3-5 mu m wave band laser. The device can realize coaxial equidirectional switching output of 1.06 mu m narrow pulse laser and 3-5 mu m laser, is used for ranging and interference on a target in a photoelectric countermeasure system, and effectively reduces the size of an emission window of a photoelectric turntable load and the volume and weight of the system. The two reflectors are used for realizing coaxial and homodromous output of 1.06 mu m narrow pulse laser and 3-5 mu m laser, and the consistency of target distance measurement and interference pointing is ensured. The photoelectric countermeasure system is particularly suitable for being used in an onboard or vehicle-mounted photoelectric countermeasure system.
Description
Technical Field
The utility model relates to a solid laser technical field of semiconductor pumping or fiber laser pumping especially relates to a realize near-infrared and well infrared laser switching output's coaxial emitter.
Background
As the fourth generation of 3-5 mu m waveband infrared staring imaging guidance missile has the advantages of high hit precision, long acting distance, no matter what the missile is launched and the like, a large number of 3-5 mu m waveband infrared staring imaging guidance air-to-ground missiles and air-to-air missiles are equipped in western countries such as the United states, and the threat in wars is great. The most effective method for dealing with the system is a 3-5 mu m waveband medium-infrared laser weapon countermeasure system. The 3-5 mu m waveband intermediate infrared laser anti-weapon system is a novel defense weapon system integrating alarming, tracking, aiming and interfering or blinding functions, can effectively interfere an infrared staring imaging guided missile, can realize vehicle-mounted, ship-mounted and airborne, is suitable for military species such as land, sea, air and the like, and has a good development prospect. The 1.06 mu m wave band laser has the advantages of large pulse energy, narrow pulse width, mature technology and the like, and is widely applied to a long-distance measuring system.
In the prior art, two sets of transmitting devices are required to be arranged on the same equipment for simultaneously interfering the infrared staring imaging guidance missile and carrying out long-distance measurement, namely, one set of transmitting devices is used for transmitting mid-infrared 3-5 mu m waveband laser, and the other set of transmitting devices is used for transmitting near-infrared 1.06 mu m waveband laser. The adoption of two sets of transmitting devices can cause the load weight of the photoelectric turntable to be too heavy and the size to be too large.
SUMMERY OF THE UTILITY MODEL
The utility model provides a realize near-infrared and well infrared laser switching output's coaxial emitter. The device can realize the switching output of two wave band lasers, is used for ranging and interfering a target in an infrared countermeasure system, and simultaneously reduces the load weight and the volume of the photoelectric turntable.
The utility model provides a following scheme:
a coaxial transmitting device for realizing near infrared and mid infrared laser switching output comprises:
a beam path conversion assembly for effecting conversion of incident laser light between a first beam path and a second beam path; the first light beam path is used for outputting 1.06 mu m wave band laser, and the second light beam path is used for outputting 3-5 mu m wave band laser;
an output light directing component for directing laser light emitted by the first beam path and laser light emitted by the second beam path to achieve co-axial emission.
Preferably: the incident laser is 1.06 mu m wave band laser, the beam path conversion component comprises a half wave plate and a polaroid, and the polaroid is placed at a Brewster angle;
the half wave plate is positioned in the light path of the incident laser and in front of the polaroid, the surface of the half wave plate is vertical to the transmission direction of the incident laser, and the half wave plate is used for changing the polarization direction of the incident laser by 90 degrees and changing P-polarized laser into S-polarized laser; the polaroid is used for splitting incident laser of the S-polarized laser and guiding the split incident laser to the first beam path;
the half-wave plate exits the optical path of the incident laser light, and the polarizer is configured to direct the incident laser light into the second beam path.
Preferably: the half wave plate is connected with a driving assembly, and the driving assembly comprises a one-dimensional guide rail bracket and a high-speed motor; the half wave plate and the one-dimensional guide rail support can be connected in a relatively sliding mode, and the high-speed motor is used for pushing the half wave plate to do linear reciprocating motion along the one-dimensional guide rail support so as to push the half wave plate into a light path of incident laser and push the half wave plate out of the light path of the incident laser.
Preferably: the polaroid is made of fused quartz, and the refractive index is 1.45; one surface of the polaroid is plated with a P polarized light high-transmittance film and an S polarized light high-reflectance film, the other surface of the polaroid is plated with a P polarized light high-transmittance film, and the included angle between the polaroid and the optical axis of incident laser is 56.5 degrees.
Preferably: the output light guide component comprises a dichroic mirror, and an included angle between the dichroic mirror and an optical axis of the incident laser is 45 degrees.
Preferably: the dichroic mirror is made of magnesium fluoride or calcium fluoride, and both sides of the dichroic mirror are plated with a high-reflection film with a wave band of 1.06 mu m and a high-transmission film with a wave band of 1.4-1.7 mu m and a wave band of 3.0-4.0 mu m under the condition of 45 degrees.
Preferably: a first mirror and a second mirror are disposed in the first beam path.
Preferably: an optical parametric oscillator front cavity mirror, a periodic polarization crystal and an optical parametric oscillator rear cavity mirror are arranged in the second light beam path; and the incident laser sequentially passes through the front cavity mirror of the optical parametric oscillator, the periodic polarization crystal and the rear cavity mirror of the optical parametric oscillator to form 3-5 mu m waveband laser.
Preferably: the front cavity mirror of the optical parametric oscillator is made of fused quartz, one surface of the front cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m laser high-transmittance film, and the other surface of the front cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m, 1.4-1.7 mu m and 3.0-4.0 mu m high-reflectance film; the periodically poled crystal is MgO: the rear surface of the PPLN crystal before the periodic polarization crystal is plated with a laser high-transmittance film with the thickness of 1.06 mu m, 1.4-1.7 mu m and 3.0-4.0 mu m, and the polarization period of the periodic polarization crystal is 29-33 mu m; the rear cavity mirror of the optical parametric oscillator is made of magnesium fluoride or calcium fluoride, one surface of the rear cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m high-reflection film, a 3.0-4.0 mu m high-transmission film and a 1.4-1.7 mu m reflectivity of 70%, and the other surface of the rear cavity mirror of the optical parametric oscillator is plated with a 1.4-1.7 mu m and a 3.0-4.0 mu m high-transmission film.
Preferably: and the light absorption cell is used for absorbing the unconverted laser light which is output by the second light beam path and passes through the output light guide component.
According to the utility model provides a concrete embodiment, the utility model discloses a following technological effect:
through the utility model discloses, can realize one kind and realize the coaxial emitter of near-infrared and middle infrared laser switching output, under an implementation, the device can include the light beam route conversion subassembly, the light beam route conversion subassembly is used for realizing the conversion of incident laser between first light beam route and second light beam route; the first light beam path is used for outputting 1.06 mu m wave band laser, and the second light beam path is used for outputting 3-5 mu m wave band laser; an output light directing component for directing laser light emitted by the first beam path and laser light emitted by the second beam path to achieve co-axial emission. The coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output can realize coaxial equidirectional switching output of 1.06 mu m narrow pulse laser and 3-5 mu m laser, is used for ranging and interference on a target in a photoelectric countermeasure system, and effectively reduces the size of a transmitting window of a photoelectric turntable load and the volume and weight of the system. The one-dimensional translation stage is driven by the high-speed motor to push the half wave plate into or out of the light path, the response time is kept in millisecond magnitude, and the repeatability is high. The two reflectors are used for realizing coaxial and homodromous output of 1.06 mu m narrow pulse laser and 3-5 mu m laser, and the consistency of target distance measurement and interference pointing is ensured. The photoelectric countermeasure system is particularly suitable for being used in an onboard or vehicle-mounted photoelectric countermeasure system.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a coaxial transmitting device for realizing switching output of near-infrared and mid-infrared lasers provided by an embodiment of the present invention.
In the figure: 1-half wave plate, 2-polaroid, 3-first reflector, 4-second reflector, 5-optical parametric oscillator front cavity mirror, 6-periodic polarization crystal, 7-optical parametric oscillator output mirror, 8-dichroic mirror, and 9-optical absorption cell.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
Examples
Referring to fig. 1, for the embodiment of the present invention provides a coaxial transmitting device for switching output of near-infrared and mid-infrared laser, the device includes a beam path switching component, the beam path switching component is used for switching incident laser between a first beam path and a second beam path; the first light beam path is used for outputting 1.06 mu m wave band laser, and the second light beam path is used for outputting 3-5 mu m wave band laser; the beam path conversion component can realize the random switching of incident laser in two beam paths in the same device, and ensures that emitted light formed after passing through different beam paths has different wave bands. The first beam path and the second beam path are respectively provided with a guiding or emitting device for realizing laser with different wave bands.
An output light directing component for directing laser light emitted by the first beam path and laser light emitted by the second beam path to achieve co-axial emission.
It is contemplated that any device known in the art for achieving laser path diversion may be used as the beam path switching assembly provided herein, as long as the respective required laser parameters into the first beam path and the second beam path are met. The laser beam path conversion module can be used for realizing the conversion of a laser beam path in the following mode, wherein the incident laser is 1.06 mu m wave band laser, the beam path conversion module comprises a half wave plate and a polaroid, and the polaroid is placed at a Brewster angle; the half wave plate is positioned in the light path of the incident laser and in front of the polaroid, the surface of the half wave plate is vertical to the transmission direction of the incident laser, and the half wave plate is used for changing the polarization direction of the incident laser by 90 degrees and changing P-polarized laser into S-polarized laser; the polaroid is used for splitting incident laser of the S-polarized laser and guiding the split incident laser to the first beam path; the half-wave plate exits the optical path of the incident laser light, and the polarizer is configured to direct the incident laser light into the second beam path. In order to push the half wave plate into or push the light path of the incident laser, the half wave plate is connected with a driving assembly, and the driving assembly comprises a one-dimensional guide rail bracket and a high-speed motor; the half wave plate and the one-dimensional guide rail support can be connected in a relatively sliding mode, and the high-speed motor is used for pushing the half wave plate to do linear reciprocating motion along the one-dimensional guide rail support so as to push the half wave plate into a light path of incident laser and push the half wave plate out of the light path of the incident laser. The half wave plate is fixed on the one-dimensional guide rail bracket, and is driven by a high-speed motor to be pushed into or pushed out of a light path, and the laser transmission direction is perpendicular to the surface of the half wave plate.
Further, the material of the polaroid is fused quartz, and the refractive index is 1.45; one surface of the polaroid is plated with a P polarized light high-transmittance film and an S polarized light high-reflectance film, the other surface of the polaroid is plated with a P polarized light high-transmittance film, and the included angle between the polaroid and the optical axis of incident laser is 56.5 degrees.
Further, the output light guide assembly comprises a dichroic mirror, and an included angle between the dichroic mirror and an optical axis of the incident laser is 45 °. Specifically, the dichroic mirror is made of magnesium fluoride or calcium fluoride, and both surfaces of the dichroic mirror are plated with a high-reflection film with a wave band of 1.06 mu m and a high-transmission film with a wave band of 1.4-1.7 mu m and a wave band of 3.0-4.0 mu m under the condition of 45 degrees.
Further, the devices in the first beam path and the second beam path may be selectively set according to the laser parameters incident on each path. The embodiment of the application can also provide that when the incident laser is laser with a wave band of 1.06 μm, the incident laser can be directly guided into the first beam path, and the device in the first beam path can directly guide the incident laser into the output light guide assembly by adopting a reflection principle. Specifically, a first mirror and a second mirror are disposed in the first beam path. In order to convert the laser with the wave band of 1.06 mu m into the laser with the wave band of 3-5 mu m, an optical parametric oscillator front cavity mirror, a periodic polarization crystal and an optical parametric oscillator rear cavity mirror are arranged in the second light beam path; and the incident laser sequentially passes through the front cavity mirror of the optical parametric oscillator, the periodic polarization crystal and the rear cavity mirror of the optical parametric oscillator to form 3-5 mu m waveband laser. Specifically, the front cavity mirror of the optical parametric oscillator is made of fused quartz, one surface of the front cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m laser high-transmittance film, and the other surface of the front cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m, 1.4-1.7 mu m and 3.0-4.0 mu m high-reflectance film; the periodically poled crystal is MgO: the rear surface of the PPLN crystal before the periodic polarization crystal is plated with a laser high-transmittance film with the thickness of 1.06 mu m, 1.4-1.7 mu m and 3.0-4.0 mu m, and the polarization period of the periodic polarization crystal is 29-33 mu m; the crystal is fixed in a temperature control furnace, and the 3-5 mu m mid-infrared laser tuning output can be realized by changing the temperature of the crystal. The rear cavity mirror of the optical parametric oscillator is made of magnesium fluoride or calcium fluoride, one surface of the rear cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m high-reflection film, a 3.0-4.0 mu m high-transmission film and a 1.4-1.7 mu m reflectivity of 70%, and the other surface of the rear cavity mirror of the optical parametric oscillator is plated with a 1.4-1.7 mu m and a 3.0-4.0 mu m high-transmission film.
The laser light source further comprises a light absorption cell, wherein the light absorption cell is used for absorbing the unconverted laser light output by the second light beam path and passing through the output light guide assembly.
The working principle of the device provided by the application is explained in detail through a concrete implementation mode as follows:
as shown in fig. 1, the device may mainly consist of a half-wave plate 1, a polarizer 2, a first mirror 3, a second mirror 4, an Optical Parametric Oscillator (OPO) front cavity mirror 5, a periodically poled crystal 6, an Optical Parametric Oscillator (OPO) output mirror 7, a dichroic mirror 8, a light absorption cell 9, and the like. The half-wave plate 1 and the polarizer 2 are configured as a beam path conversion assembly, the first reflector 3 and the second reflector 4 are configured as optical devices in the first beam path, the Optical Parametric Oscillator (OPO) front cavity mirror 5, the periodically poled crystal 6 and the Optical Parametric Oscillator (OPO) output mirror 7 are configured as optical devices in the second beam path, and the dichroic mirror 8 is configured as an output light guide assembly.
First, 1.06 μm narrow pulse P-polarized laser is obtained and used as incident laser, and the 1.06 μm narrow pulse P-polarized laser can pump Nd by 808nm or 878nm semiconductor laser: YVO4 crystal obtained through electro-optical or acousto-optical Q-switching output.
In the scheme, the half wave plate is fixed on a one-dimensional guide rail bracket (not shown in the figure), the half wave plate is driven by a high-speed motor to be pushed into or pushed out of a light path, and the transmission direction of incident laser is vertical to the surface of the half wave plate; when the half-wave plate is pushed into the light path, the incident narrow pulse P polarized laser with the diameter of 1.06 mu m can change the polarization direction of linearly polarized light by 90 degrees and change the P polarization into the S polarization; one surface of the polaroid is plated with a P polarized light high-transmittance film and an S polarized light high-reflectance film, and the other surface of the polaroid is plated with a P polarized light high-transmittance film and placed at a Brewster angle. After the light is split by the polarizer, the reflected light enters the dichroic mirror after passing through the two reflectors and is reflected and output to the output light guide component, and the output light guide component outputs 1.06 mu m waveband laser for distance measurement.
When the half wave is pushed out of the light path, the polarization direction of the 1.06 mu m narrow pulse P polarized laser which is incident after passing through the polarizer is kept unchanged, the transmitted light passes through the OPO cavity, the 1.06 mu m narrow pulse P polarized laser sequentially passes through the optical parametric oscillator front cavity mirror, the periodic polarization crystal and the optical parametric oscillator rear cavity mirror to form 3-5 mu m waveband laser output, and the unconverted 1.06 mu m laser passes through the dichroic mirror and enters the absorption cell.
When the half wave plate is pushed into or pushed out of the light path of incident light, the two holophotes in the system can ensure that 1.06 mu m narrow pulse laser and 3-5 mu m laser output by the system are coaxially output in the same direction.
In a word, the coaxial transmitting device for realizing the switching output of the near-infrared laser and the mid-infrared laser can realize the coaxial equidirectional switching output of the narrow pulse laser with the diameter of 1.06 mu m and the laser with the diameter of 3-5 mu m, is used for ranging and interfering a target in a photoelectric countermeasure system, and effectively reduces the size of a transmitting window of a load of a photoelectric turntable and the volume and weight of the system. The one-dimensional translation stage is driven by the high-speed motor to push the half wave plate into or out of the light path, the response time is kept in millisecond magnitude, and the repeatability is high. The two reflectors are used for realizing coaxial and homodromous output of 1.06 mu m narrow pulse laser and 3-5 mu m laser, and the consistency of target distance measurement and interference pointing is ensured. The photoelectric countermeasure system is particularly suitable for being used in an onboard or vehicle-mounted photoelectric countermeasure system.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output is characterized by comprising:
a beam path conversion assembly for effecting conversion of incident laser light between a first beam path and a second beam path; the first light beam path is used for outputting 1.06 mu m wave band laser, and the second light beam path is used for outputting 3-5 mu m wave band laser;
an output light directing component for directing laser light emitted by the first beam path and laser light emitted by the second beam path to achieve co-axial emission.
2. The device of claim 1, wherein the incident laser light is 1.06 μm band laser light, the beam path conversion assembly comprises a half-wave plate and a polarizer, the polarizer is disposed at brewster angle;
the half wave plate is positioned in the light path of the incident laser and in front of the polaroid, the surface of the half wave plate is vertical to the transmission direction of the incident laser, and the half wave plate is used for changing the polarization direction of the incident laser by 90 degrees and changing P-polarized laser into S-polarized laser; the polaroid is used for splitting incident laser of the S-polarized laser and guiding the split incident laser to the first beam path;
the half-wave plate exits the optical path of the incident laser light, and the polarizer is configured to direct the incident laser light into the second beam path.
3. The coaxial transmitter for switching output of near-infrared and mid-infrared lasers according to claim 2, wherein the half-wave plate is connected with a driving assembly, the driving assembly comprises a one-dimensional guide rail bracket and a high-speed motor; the half wave plate and the one-dimensional guide rail support can be connected in a relatively sliding mode, and the high-speed motor is used for pushing the half wave plate to do linear reciprocating motion along the one-dimensional guide rail support so as to push the half wave plate into a light path of incident laser and push the half wave plate out of the light path of the incident laser.
4. The device of claim 2, wherein the polarizer is made of fused silica with a refractive index of 1.45; one surface of the polaroid is plated with a P polarized light high-transmittance film and an S polarized light high-reflectance film, the other surface of the polaroid is plated with a P polarized light high-transmittance film, and the included angle between the polaroid and the optical axis of incident laser is 56.5 degrees.
5. The device of claim 1, wherein the output light guide assembly comprises a dichroic mirror, and the dichroic mirror forms an angle of 45 ° with the optical axis of the incident laser light.
6. The coaxial transmitting device for realizing switching output of near-infrared and mid-infrared lasers according to claim 5, wherein the dichroic mirror is made of magnesium fluoride or calcium fluoride, and both surfaces of the dichroic mirror are plated with a high-reflection film with a wave band of 1.06 μm and a high-transmission film with a wave band of 1.4-1.7 μm and a wave band of 3.0-4.0 μm under 45 degrees.
7. The device as claimed in any one of claims 2 to 6, wherein the first beam path is configured with a first mirror and a second mirror.
8. The coaxial transmitter for switching outputs of near-infrared and mid-infrared lasers as claimed in any one of claims 2 to 6, wherein an optical parametric oscillator front cavity mirror, a periodically poled crystal and an optical parametric oscillator back cavity mirror are disposed in the second beam path; and the incident laser sequentially passes through the front cavity mirror of the optical parametric oscillator, the periodic polarization crystal and the rear cavity mirror of the optical parametric oscillator to form 3-5 mu m waveband laser.
9. The coaxial transmitter for switching output of near-infrared laser and mid-infrared laser as claimed in claim 8, wherein the front cavity mirror of the optical parametric oscillator is made of fused quartz, one surface of the front cavity mirror of the optical parametric oscillator is plated with a 1.06 μm laser highly transparent film, and the other surface is plated with a 1.06 μm, 1.4-1.7 μm, 3.0-4.0 μm highly reflective film; the periodically poled crystal is MgO: the rear surface of the PPLN crystal before the periodic polarization crystal is plated with a laser high-transmittance film with the thickness of 1.06 mu m, 1.4-1.7 mu m and 3.0-4.0 mu m, and the polarization period of the periodic polarization crystal is 29-33 mu m; the rear cavity mirror of the optical parametric oscillator is made of magnesium fluoride or calcium fluoride, one surface of the rear cavity mirror of the optical parametric oscillator is plated with a 1.06 mu m high-reflection film, a 3.0-4.0 mu m high-transmission film and a 1.4-1.7 mu m reflectivity of 70%, and the other surface of the rear cavity mirror of the optical parametric oscillator is plated with a 1.4-1.7 mu m and a 3.0-4.0 mu m high-transmission film.
10. The device of any one of claims 1 to 6, further comprising a light absorption cell for absorbing unconverted laser light from the second beam path through the output light directing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020361346.5U CN211700920U (en) | 2020-03-20 | 2020-03-20 | Coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020361346.5U CN211700920U (en) | 2020-03-20 | 2020-03-20 | Coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211700920U true CN211700920U (en) | 2020-10-16 |
Family
ID=72779771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020361346.5U Active CN211700920U (en) | 2020-03-20 | 2020-03-20 | Coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211700920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702319A (en) * | 2021-08-20 | 2021-11-26 | 浙江大学杭州国际科创中心 | System and method for monitoring volume concentration and column concentration of greenhouse gas and volatile organic compounds |
-
2020
- 2020-03-20 CN CN202020361346.5U patent/CN211700920U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702319A (en) * | 2021-08-20 | 2021-11-26 | 浙江大学杭州国际科创中心 | System and method for monitoring volume concentration and column concentration of greenhouse gas and volatile organic compounds |
| CN113702319B (en) * | 2021-08-20 | 2023-08-18 | 浙江大学杭州国际科创中心 | Greenhouse gas and volatile organic compound concentration and column concentration monitoring system and monitoring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5319434A (en) | Laser rangefinder apparatus with fiber optic interface | |
| US4902127A (en) | Eye-safe coherent laser radar | |
| US4208636A (en) | Laser apparatus | |
| CN211700920U (en) | Coaxial transmitting device for realizing near-infrared and mid-infrared laser switching output | |
| CN110854658A (en) | High repetition frequency 1.5um human eye safety Q-switched microchip laser | |
| US4173001A (en) | Laser apparatus | |
| KR100281832B1 (en) | Eyesafe laser transmitter | |
| US4186353A (en) | Laser amplification system | |
| CN110137791B (en) | Long pulse width laser adopting 4f image transmission system | |
| CN107919912B (en) | Same-frequency-band polarization multiplexing spatial laser communication optical transmitter and receiver | |
| CN111370988B (en) | 1.55 mu m wave band Q-switched pulse laser | |
| CN111244743B (en) | Dual-band laser for realizing medium-long wave infrared fast switching output based on electro-optic crystal | |
| Majumdar et al. | Optical Communications in the mid-wave IR spectral band | |
| US3654482A (en) | Mirrorless optical cavity | |
| KR860700375A (en) | Raman laser with single reflector | |
| CN102354897A (en) | External secondary cascading difference frequency terahertz light source generation device and implementation method | |
| CN212626511U (en) | Medium-long wave infrared Raman laser | |
| CN113078542B (en) | Orthogonal polarization dual-wavelength laser and method based on Nd, MgO and LN | |
| CN108519591A (en) | A kind of laser ranging light beam is directed toward the device of real-time high-precision monitoring | |
| CN108107642A (en) | A kind of solid and frequency Sodium guide star spectrum continuous laser output device and output method | |
| CN210926601U (en) | Self-starting Mamyshev optical fiber oscillator | |
| CN113777722A (en) | Intermediate infrared laser transmission system based on hollow anti-resonance optical fiber | |
| CN110912612A (en) | Airborne point-to-point rapid tracking laser communication device | |
| CN219891410U (en) | Wind-measuring laser radar system based on polarization extinction and blind area avoidance | |
| Stultz et al. | Eyesafe high-pulse-rate laser progress at Hughes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |