CN210608008U - Controller for laser light intensity and frequency - Google Patents
Controller for laser light intensity and frequency Download PDFInfo
- Publication number
- CN210608008U CN210608008U CN201922225391.8U CN201922225391U CN210608008U CN 210608008 U CN210608008 U CN 210608008U CN 201922225391 U CN201922225391 U CN 201922225391U CN 210608008 U CN210608008 U CN 210608008U
- Authority
- CN
- China
- Prior art keywords
- laser
- frequency
- controller
- laser light
- intensity
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The utility model provides a controller of laser light intensity and frequency, this controller of laser light intensity and frequency can be based on drive circuit part and laser propagation part frequency and light intensity of control laser in the effective range, and can not change the propagation direction of the laser after the modulation, in addition, this controller can also be integrated this drive circuit part and this laser propagation part in a module and realize the input and the output of laser through optic fibre, this not only improves the degree of integration of controller, and can also reduce the manufacturing cost and the control degree of difficulty of control, thereby make this controller can be applicable to in the different laser application occasions.
Description
Technical Field
The utility model relates to a technical field of laser regulation and control, in particular to controller of laser light intensity and frequency.
Background
Laser is widely applied to different technical fields, and in order to enable the laser to be suitable for parameter requirements of different technical fields, external modulation is generally required to be carried out on the laser so as to control the light intensity and frequency of the laser. At present, the light intensity and frequency modulation of laser are mainly realized through an acousto-optic modulation or electro-optic modulation mode, wherein the acousto-optic modulation is to change the light intensity and frequency by externally modulating the amplitude of sound waves so that the laser is diffracted after passing through an acousto-optic medium, the electro-optic modulation is to change the polarization direction of the laser by changing the refractive index of an electro-optic crystal through an external electric field, and the adjustment of the light intensity and frequency of the laser is realized by combining with an external prism. For the acousto-optic adjustment mode, a corresponding modulation process is usually realized by adopting a positive-order diffraction spot or a negative-order diffraction spot, but for medium steels with different frequencies, the diffraction angles of the positive-order diffraction spot or the negative-order diffraction spot are different, so that the propagation directions of laser emergent after acousto-optic modulation are correspondingly different along with the change of laser frequency, which has great inconvenience in the practical application process; in addition, the existing laser modulation modules are all manufactured in the form of integrated driving modules, which are expensive and cannot realize digital control, thus seriously hindering the popularization and application of the laser modulation modules. It can be seen that the prior art laser light intensity and frequency modulators are generally expensive and inconvenient to use.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model provides a controller of laser intensity and frequency, the controller of laser intensity and frequency is through setting up drive circuit part and laser transmission part, this laser transmission part is used for transmitting laser, this drive circuit part is used for exerting corresponding drive control signal to the acousto-optic crystal among them in the laser transmission process, so that laser can be carried out acousto-optic modulation when passing this acousto-optic crystal, thereby reach the purpose of adjusting laser intensity and frequency, this controller can control the frequency and the light intensity of laser in the effective range based on this drive circuit part and this laser transmission part, and can not change the propagation direction of laser after modulation, in addition, this controller can also integrate this drive circuit part and this laser transmission part into a module and realize the input and the output of laser through optic fibre, the integration degree of the controller is improved, the production cost and the control difficulty of the controller can be reduced, and therefore the controller can be suitable for different laser application occasions.
The utility model provides a controller of laser light intensity and frequency, its characterized in that:
the controller of the laser light intensity and frequency comprises a driving circuit component and a laser transmission component; wherein the content of the first and second substances,
the laser propagation component comprises a first optical fiber collimation package used for emitting laser and a second optical fiber collimation package used for receiving the laser;
a polarization beam splitter prism, a first plano-convex lens, a first diaphragm, an acousto-optic adjusting crystal, a second diaphragm, a second plano-convex lens, a quarter wave plate, a first reflector, a second reflector and a third reflector are sequentially arranged between the first optical fiber collimating package and the second optical fiber collimating package;
the driving circuit component is connected with the acousto-optic modulation crystal to output a driving control signal to the acousto-optic modulation crystal;
further, the first fiber collimation package has a first optical collimation piece and a first laser port;
the second fiber collimation package has a second optical collimation piece and a second laser port;
the first light collimating component and the second light collimating component each comprise a 4f beam expanding collimating lens group;
the first laser port and the second laser port both comprise optical fiber connectors and optical fiber clamping structures; wherein the content of the first and second substances,
the optical fiber clamping structure is arranged on the periphery of the optical fiber connecting port so as to fix an external transmission optical fiber on the optical fiber connecting port;
further, an optical input port of the acousto-optic modulation crystal is arranged at the focal position of the first plano-convex lens;
the light output port of the acousto-optic adjusting crystal is arranged at the focal position of the second plano-convex lens;
the focal lengths of the first plano-convex lens and the second plano-convex lens are both 150 mm;
further, the first reflector, the second reflector and the third reflector are respectively arranged on the reflector adjusting frame;
the reflector adjusting frame is used for adjusting the inclination angle of the first reflector, the second reflector or the third reflector relative to the laser beam;
further, the reflector adjusting frame comprises an accommodating frame and a plurality of inclination adjusting rods; wherein the content of the first and second substances,
the accommodating frame is in a hollow frame shape, and the hollow part of the accommodating frame is used for accommodating the corresponding reflector;
the plurality of inclination adjusting rods are distributed on the frame edge part of the accommodating frame and are in abutting contact with the frame edge part so as to apply abutting force perpendicular to the plane of the accommodating frame;
further, each of the tilt adjusting rods includes a rod mount and a threaded rod; wherein the content of the first and second substances,
the rod mounting piece is fixedly arranged on the frame edge part of the accommodating frame and is provided with a threaded through hole;
the threaded rod penetrates through the threaded through hole and is in threaded connection with the rod mounting piece;
one end of the threaded rod is in abutting contact with the edge part of the frame, and the other end of the threaded rod is provided with a rotating handle;
further, the controller of the laser intensity and frequency also comprises a base;
each optical element in the laser propagation component is arranged on the base through a fixed base;
a buffer part is also arranged between the bottom of the fixed base and the base;
further, the acousto-optic modulation crystal comprises an acousto-optic crystal and an acoustic wave applying member; wherein the content of the first and second substances,
the sound wave applying piece comprises a crystal accommodating frame and a sound wave generator;
the acousto-optic crystal is arranged in the crystal accommodating frame;
the sound wave generator is in signal connection with the driving circuit component to receive the driving control signal and generate a sound wave according to the driving control signal;
further, the driving circuit part comprises a shell and a driving functional module; wherein the content of the first and second substances,
the driving function module is arranged in the shell;
the driving function module comprises a power supply, a radio frequency signal generator, a frequency mixer, a voltage amplifier, a laser frequency control end, a laser light intensity control end, a laser switch control end and a radio frequency signal output end;
the power supply is used for supplying power to the radio frequency signal generator, the frequency mixer and the voltage amplifier, the radio frequency signal output end is connected with the acousto-optic adjusting crystal through a high-frequency line, and 0-10V analog signals are respectively input to the laser frequency control end, the laser light intensity control end and the laser switch control end through the high-frequency line so as to realize the control of laser frequency, laser light intensity and laser on-off;
furthermore, the shell is also provided with a laser frequency control knob, a laser light intensity control knob, a mixing signal control knob and a radio frequency signal control knob.
Compared with the prior art, the controller for the laser light intensity and frequency is provided with the driving circuit component and the laser transmission component, the laser transmission component is used for transmitting laser, the driving circuit component is used for applying corresponding driving control signals to the acousto-optic crystal in the laser transmission process, so that the laser can be subjected to acousto-optic modulation when passing through the acousto-optic crystal, the aim of adjusting the laser light intensity and frequency is achieved, the controller can control the laser frequency and light intensity in an effective range based on the driving circuit component and the laser transmission component, the transmission direction of the modulated laser is not changed, in addition, the controller can integrate the driving circuit component and the laser transmission component into a module and realize the input and output of the laser through optical fibers, the integration degree of the controller is improved, and the production cost and the control difficulty of the control are reduced, thereby enabling the controller to be adapted for use in different laser applications.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 controller for laser intensity and frequency provided by the present invention.
Reference numerals: 1. a base; 2. a first fiber collimation package; 3. a polarization splitting prism; 4. a first plano-convex lens; 5. a first diaphragm; 6. acousto-optic adjusting crystal; 7. a second diaphragm; 8. a second diaphragm; 9. a quarter wave plate; 10. a first reflector; 11. a second reflector; 12. a third reflector; 13. a second fiber collimation package; 14. a drive circuit component.
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 without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, a schematic structural diagram of a controller for laser intensity and frequency according to an embodiment of the present invention is shown. The controller of the laser light intensity and frequency comprises a driving circuit component and a laser transmission component; wherein the content of the first and second substances,
the laser propagation component comprises a first optical fiber collimation package used for emitting laser and a second optical fiber collimation package used for receiving the laser;
a polarization beam splitter prism, a first plano-convex lens, a first diaphragm, an acousto-optic adjusting crystal, a second diaphragm, a second plano-convex lens, a quarter wave plate, a first reflector, a second reflector and a third reflector are sequentially arranged between the first optical fiber collimating package and the second optical fiber collimating package;
the drive circuit component is connected with the acousto-optic modulation crystal to output a drive control signal to the acousto-optic modulation crystal.
The working process of the controller for the laser light intensity and frequency is as follows: the laser beam from the first optical fiber collimation package passes through the polarization beam splitter prism and then is emitted to be a laser beam with a first polarization state, the laser beam sequentially passes through the first plano-convex lens and the first diaphragm and then is focused and is incident into the acousto-optic adjusting crystal, the acousto-optic adjusting crystal performs acousto-optic modulation on the laser beam under the driving control of the driving circuit component so that the laser beam is diffracted and generates a zero-order diffracted beam and a positive-negative-order diffracted beam, only the positive-negative-order diffracted beam can be continuously transmitted and re-converted into a parallel beam after the diffracted beam emitted from the acousto-optic adjusting crystal sequentially passes through the second diaphragm and the second plano-convex lens, finally the parallel beam passes through the quarter-wave plate and is converted into a laser beam with a second polarization state, and the laser beam with the second polarization state reaches the first reflector and then is reflected and returns along the original path, after reaching the polarization beam splitter prism, the transmission direction is changed, the polarization beam splitter prism is sequentially reflected by the second reflector and the third reflector, and finally the polarization beam splitter prism is emitted out from the second optical fiber collimating package to form an emergent laser beam modulated by light intensity and frequency.
Preferably, the first fiber collimation package has a first optical collimation piece and a first laser port;
the second fiber collimation package has a second optical collimation piece and a second laser port;
the first light collimating component and the second light collimating component both comprise 4f beam expanding collimating lens groups;
the first laser port and the second laser port both comprise optical fiber connectors and optical fiber clamping structures; wherein the content of the first and second substances,
the optical fiber clamping structure is arranged on the periphery of the optical fiber connecting port so as to fix the external transmission optical fiber on the optical fiber connecting port;
preferably, the optical input port of the acousto-optic modulation crystal is arranged at the focal position of the first plano-convex lens;
the light output port of the acousto-optic adjusting crystal is arranged at the focal position of the second plano-convex lens;
the focal lengths of the first plano-convex lens and the second plano-convex lens are both 150 mm;
preferably, the first reflector, the second reflector and the third reflector are respectively arranged on the reflector adjusting frame;
the reflector adjusting frame is used for adjusting the inclination angle of the first reflector, the second reflector or the third reflector relative to the laser beam;
preferably, the reflector adjusting frame comprises an accommodating frame and a plurality of inclination adjusting rods; wherein the content of the first and second substances,
the accommodating frame is in a hollow frame shape, wherein the hollow part is used for accommodating the corresponding reflector;
the plurality of inclination adjusting rods are distributed on the frame edge part of the accommodating frame and are in abutting contact with the frame edge part so as to apply abutting force perpendicular to the plane of the accommodating frame;
preferably, each of the tilt adjusting rods comprises a rod mount and a threaded rod; wherein the content of the first and second substances,
the rod mounting piece is fixedly arranged on the frame edge part of the accommodating frame and is provided with a threaded through hole;
the threaded rod penetrates through the threaded through hole and is in threaded connection with the rod mounting piece;
one end of the threaded rod is in abutting contact with the edge part of the frame, and the other end of the threaded rod is provided with a rotating handle;
preferably, the controller of the laser intensity and frequency further comprises a base;
each optical element in the laser propagation component is arranged on the base through a fixed base;
a buffer piece is arranged between the bottom of the fixed base and the base;
preferably, the acousto-optic modulation crystal comprises an acousto-optic crystal and an acoustic wave applying member; wherein the content of the first and second substances,
the sound wave applying member includes a crystal accommodating frame and a sound wave generator;
the acousto-optic crystal is arranged in the crystal accommodating frame;
the sound wave generator is in signal connection with the driving circuit component to receive the driving control signal and generate a sound wave according to the driving control signal;
preferably, the driving circuit part includes a housing and a driving function module; wherein the content of the first and second substances,
the driving function module is arranged in the shell;
the driving function module comprises a power supply, a radio frequency signal generator, a frequency mixer, a voltage amplifier, a laser frequency control end, a laser light intensity control end, a laser switch control end and a radio frequency signal output end;
the power supply is used for supplying power to the radio frequency signal generator, the frequency mixer and the voltage amplifier, the radio frequency signal output end is connected with the acousto-optic adjusting crystal through a high-frequency line, and 0-10V analog signals are respectively input to the laser frequency control end, the laser light intensity control end and the laser switch control end through the high-frequency line so as to realize the control of the laser frequency, the laser light intensity and the laser on-off;
preferably, the shell is further provided with a laser frequency control knob, a laser light intensity control knob, a mixing signal control knob and a radio frequency signal control knob.
Specifically, firstly, a power supply is used for supplying power to the driving function module, and then 0-10V analog signals are respectively input to a laser frequency control end, a laser light intensity control end and a laser switch control end through high-frequency lines, wherein the analog signals can be provided by a direct-current power supply or a data acquisition card and the like, the analog signals with different voltages correspond to the frequencies and the amplitudes of different radio-frequency signals, for example, for the laser switch control end, when the analog signal voltage is 0, the radio-frequency signals are closed, and when the analog signal voltage is 10V, the radio-frequency signals are opened; the frequency and the amplitude of the radio frequency signal can be adjusted and calibrated by rotating the laser frequency control knob and the laser light intensity control knob, the phase of the radio frequency signal can be adjusted by utilizing the mixing signal control knob, and the radio frequency signal control knob is used for manually controlling the on-off of the radio frequency signal; finally, the generated radio frequency signal is transmitted to the acousto-optic adjusting crystal through a radio frequency signal output end by using a high-frequency wire, and the frequency, the light intensity and the on-off of the laser are controlled by the driving function module through controlling the frequency, the light intensity and the on-off of the radio frequency signal.
As can be seen from the above description of the embodiments, the controller for laser light intensity and frequency can achieve the purpose of adjusting laser light intensity and frequency by providing a driving circuit component and a laser propagation component, the driving circuit component is used for applying a corresponding driving control signal to the acousto-optic crystal in the laser transmission process, so that laser light can be acousto-optically modulated when passing through the acousto-optic crystal, the controller can control the frequency and light intensity of laser light within an effective range based on the driving circuit component and the laser propagation component, and does not change the propagation direction of the modulated laser light, furthermore, the controller can integrate the driving circuit component and the laser propagation component into one module and realize the input and output of laser light through optical fibers, which not only improves the integration degree of the controller, and the production cost and the control difficulty of the control can be reduced, so that the controller can be suitable for different laser application occasions.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A controller of laser intensity and frequency, characterized by:
the controller of the laser light intensity and frequency comprises a driving circuit component and a laser transmission component; wherein the laser propagation component comprises a first fiber collimation package for emitting laser light and a second fiber collimation package for receiving laser light;
a polarization beam splitter prism, a first plano-convex lens, a first diaphragm, an acousto-optic adjusting crystal, a second diaphragm, a second plano-convex lens, a quarter wave plate, a first reflector, a second reflector and a third reflector are sequentially arranged between the first optical fiber collimating package and the second optical fiber collimating package;
the drive circuit component is connected with the acousto-optic modulation crystal to output a drive control signal to the acousto-optic modulation crystal.
2. The controller for controlling the intensity and frequency of laser light according to claim 1, wherein:
the first fiber collimation package has a first optical collimation piece and a first laser port;
the second fiber collimation package has a second optical collimation piece and a second laser port;
the first light collimating component and the second light collimating component each comprise a 4f beam expanding collimating lens group;
the first laser port and the second laser port both comprise optical fiber connectors and optical fiber clamping structures;
wherein the content of the first and second substances,
the optical fiber clamping structure is arranged on the periphery of the optical fiber connecting port so as to fix the external transmission optical fiber on the optical fiber connecting port.
3. The controller for controlling the intensity and frequency of laser light according to claim 1, wherein:
the optical input port of the acousto-optic adjusting crystal is arranged at the focal position of the first plano-convex lens;
the light output port of the acousto-optic adjusting crystal is arranged at the focal position of the second plano-convex lens;
the focal lengths of the first plano-convex lens and the second plano-convex lens are both 150 mm.
4. The controller for controlling the intensity and frequency of laser light according to claim 1, wherein:
the first reflector, the second reflector and the third reflector are respectively arranged on the reflector adjusting frame;
the mirror adjusting frame is used for adjusting the inclination angle of the first mirror, the second mirror or the third mirror relative to the laser beam.
5. The controller for controlling the intensity and frequency of laser light according to claim 4, wherein:
the reflector adjusting frame comprises an accommodating frame and a plurality of inclination adjusting rods; the accommodating frame is in a hollow frame shape, and the hollow part of the accommodating frame is used for accommodating a corresponding reflector;
the plurality of inclination adjusting rods are distributed on the frame edge part of the accommodating frame and are in abutting contact with the frame edge part so as to apply abutting force perpendicular to the plane of the accommodating frame.
6. The controller for controlling the intensity and frequency of laser light according to claim 5, wherein:
each of the tilt adjustment rods comprises a rod mount and a threaded rod; wherein the content of the first and second substances,
the rod mounting piece is fixedly arranged on the frame edge part of the accommodating frame and is provided with a threaded through hole;
the threaded rod penetrates through the threaded through hole and is in threaded connection with the rod mounting piece;
one end of the threaded rod is in butt contact with the edge part of the frame, and the other end of the threaded rod is provided with a rotating handle.
7. The controller for controlling the intensity and frequency of laser light according to claim 1, wherein:
the controller for the laser light intensity and frequency further comprises a base;
each optical element in the laser propagation component is arranged on the base through a fixed base;
and a buffer piece is also arranged between the bottom of the fixed base and the base.
8. The controller for controlling the intensity and frequency of laser light according to claim 1, wherein:
the acousto-optic adjusting crystal comprises an acousto-optic crystal and an acoustic wave applying piece; wherein the content of the first and second substances,
the sound wave applying piece comprises a crystal accommodating frame and a sound wave generator;
the acousto-optic crystal is arranged in the crystal accommodating frame;
the acoustic wave generator is in signal connection with the drive circuit component to receive the drive control signal and generate an acoustic wave in accordance with the drive control signal.
9. The controller for controlling the intensity and frequency of laser light according to claim 1, wherein:
the drive circuit component comprises a shell and a drive functional module; wherein the content of the first and second substances,
the driving function module is arranged in the shell;
the driving function module comprises a power supply, a radio frequency signal generator, a frequency mixer, a voltage amplifier, a laser frequency control end, a laser light intensity control end, a laser switch control end and a radio frequency signal output end;
the power supply is used for supplying power to the radio frequency signal generator, the frequency mixer and the voltage amplifier, the radio frequency signal output end is connected with the acousto-optic adjusting crystal through a high-frequency line, and 0-10V analog signals are respectively input to the laser frequency control end, the laser light intensity control end and the laser switch control end through the high-frequency line, so that the control of the laser frequency, the laser light intensity and the laser on-off is realized.
10. The controller for controlling the intensity and frequency of laser light according to claim 9, wherein:
the shell is also provided with a laser frequency control knob, a laser light intensity control knob, a mixing signal control knob and a radio frequency signal control knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922225391.8U CN210608008U (en) | 2019-12-12 | 2019-12-12 | Controller for laser light intensity and frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922225391.8U CN210608008U (en) | 2019-12-12 | 2019-12-12 | Controller for laser light intensity and frequency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210608008U true CN210608008U (en) | 2020-05-22 |
Family
ID=70722794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922225391.8U Expired - Fee Related CN210608008U (en) | 2019-12-12 | 2019-12-12 | Controller for laser light intensity and frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210608008U (en) |
-
2019
- 2019-12-12 CN CN201922225391.8U patent/CN210608008U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101673921B (en) | A tunable laser system | |
| CN101446687B (en) | Collinear femto-second laser polarized pump detecting system | |
| CN105676483B (en) | A kind of light polarization control device and method | |
| CN101794958A (en) | Tunable laser | |
| CN104914511A (en) | Optical transmission device | |
| US5552926A (en) | Device and method for wavelength conversion and BBO crystal for wavelength conversion | |
| CN109633603B (en) | Coupling device and method for phase-control optical waveguide chip and input optical fiber | |
| CN100364186C (en) | External cavity electrically controlled laser wavelength code input method and biwavelength laser module thereof | |
| CN104321690A (en) | Optical modulator | |
| CN210379758U (en) | Acousto-optic Q-switched ultraviolet laser | |
| CN210608008U (en) | Controller for laser light intensity and frequency | |
| CN210926606U (en) | Laser frequency locking device based on wavelength meter and numerical control feedback | |
| CN107425409A (en) | Mode-locked laser and optical system | |
| JP6521062B2 (en) | Optical signal modulator and system | |
| CN114236940B (en) | Double-frequency liquid crystal cone lens, control method, adjusting device and laser shaping device | |
| CN104269730A (en) | Passively Q-switched pulse laser | |
| US20070140701A1 (en) | Optical signal polarisation control method and controller device | |
| JP2000295175A (en) | Light remote antenna | |
| CN218938559U (en) | Optical fiber coupling system with adjustable output light power ratio for atomic physics research | |
| JP2021189227A (en) | Optical modulator | |
| CN111413812A (en) | Polarization-independent optical fiber acousto-optic device | |
| CN207116907U (en) | Mode-locked laser and optical system | |
| CN111630948B (en) | Optical fiber coupling input and output acousto-optic device | |
| CN214540012U (en) | Coupling structure of M-Z modulator and light source and laser radar comprising coupling structure | |
| EP1936434B1 (en) | Active temporal modulation of ultrashort pulse trains using reconfigurable optical gratings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200522 Termination date: 20211212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |