CN105680304A - Optical fiber output laser with dual wavelengths of 2489nm and 730nm for laser radar - Google Patents
Optical fiber output laser with dual wavelengths of 2489nm and 730nm for laser radar Download PDFInfo
- Publication number
- CN105680304A CN105680304A CN201510930450.5A CN201510930450A CN105680304A CN 105680304 A CN105680304 A CN 105680304A CN 201510930450 A CN201510930450 A CN 201510930450A CN 105680304 A CN105680304 A CN 105680304A
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- laser
- output
- wavelength
- optical fiber
- fiber
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08086—Multiple-wavelength emission
- H01S3/0809—Two-wavelenghth emission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/1083—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering using parametric generation
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses an optical fiber output laser with dual wavelengths of 2489nm and 730nm for a laser radar. A bean splitting optical fiber coil with the wavelength of 730 nm is arranged at the tail section of the laser output optical fiber with the wavelength of 730nm for splitting one path of the laser with the wavelength of 730nm to output; signal light with the wavelength of 2489nm, idler frequency light with the wavelength of 730nm, pump light I with the wavelength of 1500nm and pump light II with the wavelength of 905nm enter a 2489nm-wavelenth four-wave mixing frequency period polarization lithium niobate laser resonant cavity to generate a four-wave mixing frequency reaction so as to generate the signal light with the wavelength of 2489nm for outputting, and finally the optical fiber laser with the dual wavelengths of 2489nm and 730nm is output.
Description
Technical field: laser instrument and applied technical field.
Technical background:
2489nm, 730nm dual-wavelength laser, it is the laser applied for laser radar spectral detection, lasing light emitter, instrumental analysis etc., it can pass the using light sources such as the analysis detection of 2489nm, 730nm dual wavelength sensor as laser radar optical fiber, and it is additionally operable to laser and the optoelectronic areas such as laser radar optical communication; Optical fiber laser, as the representative of third generation laser technology, has glass optical fiber low cost of manufacture and the having mercy on property of optical fiber, glass material and has an extremely low bulk area ratio, and rapid heat dissipation, loss are low with conversion efficiency relatively advantages of higher, and range of application constantly expands.
Summary of the invention:
A kind of laser radar 2489nm, 730nm dual-wavelength optical-fiber output laser, at 730nm laser output optical fibre rear, 730nm splitting optical fiber circle is set, the 730nm laser output of beam splitting one road, flashlight 2489nm, ideler frequency light 730nm, pump light I1500nm enter 2489nm four-wave mixing periodically poled lithium niobate laserresonator with pump light II905nm, there is four-wave mixing effect, produce flashlight 2489nm output, finally export the output of 2489nm, 730nm dual-wavelength optical-fiber laser.
Scheme one, 2489nm tetra-long wavelength fiber laser structure.
The structure that the periodically poled lithium niobate laserresonator 38 of four-wave mixing occurs with pump light II905nm for flashlight 2489nm, ideler frequency light 730nm, pump light I1500nm is set, 2489nm is set at 2489nm four-wave mixing periodically poled lithium niobate laserresonator outfan and focuses on output coupling mirror coupling access 2489nm output optical fibre.
Scheme two, 730nm laser beam splitter fiber turns is set
Arranging 730nm splitting optical fiber circle at 730nm laser output optical fibre rear, beam splitting one road 730nm laser exports through 730nm laser output.
Scheme three, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber is set
1500nm periodically poled lithium niobate laser parameter oscillating tank chamber is set, set gradually from its input: 3-stage optical fiber input mirror, parametric oscillation basic frequency laser crystal, parametric oscillation input mirror, 1500nm periodically poled lithium niobate laser crystal, 1500nm outgoing mirror and the 1500nm focusing output coupling mirror of outfan, thus constitute 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber.
Scheme four, 905nm gain resonator cavity is set
905nm gain resonator cavity is set, sets gradually from its input: two grades input mirror, basic frequency laser crystal, 905nm gain crystal, 905nm outgoing mirror and the 905nm focusing output coupling mirror of outfan, thus constitute 905nm gain resonator cavity.
Scheme five, 730nm resonator cavity is set
730nm resonator cavity is set, 730nm resonator cavity is set, set gradually from its input: one-level input mirror, 730nm laser crystal, 730nm outgoing mirror and the 730nm focusing output coupling mirror of outfan, thus constitute 730nm resonator cavity.
Scheme six, 3-stage optical fiber structure is set
3-stage optical fiber structure is set, 3-stage optical fiber structure is integrally connected by one-level fiber turns, secondary light fibre circle and 3-stage optical fiber circle and forms, one-level fiber turns is connected on semiconductor module by 905nm pumping coupler, semiconductor module is powered by semiconductor module block power supply, above-mentioned whole optical element is all arranged on optical rail and light facility, arranges fan 3 in optical rail and light facility.
The core content of the present invention:
A kind of laser radar 2489nm, 730nm dual-wavelength optical-fiber output laser, at 730nm laser output optical fibre rear, 730nm splitting optical fiber circle is set, beam splitting one road 730nm laser exports through 730nm laser output, the structure that the periodically poled lithium niobate laserresonator of four-wave mixing occurs with pump light II905nm for flashlight 2489nm, ideler frequency light 730nm, pump light I1500nm is set, four-wave mixing generates the output of 2489nm optical-fiber laser, constitutes 2489nm, 730nm dual-wavelength optical-fiber output laser structure.
Accompanying drawing illustrates:
Accompanying drawing is the structure chart of this patent, and accompanying drawing is wherein: 1, optical rail and light facility, 2, semiconductor module, 3, fan, 4, 905nm pumping coupler, 5, semiconductor module block power supply, 6, one-level fiber turns, 7, one-level fiber-optic output, 8, one-level fiber coupler, 9, one-level input mirror, 10, 730nm laser crystal, 11, 730nm outgoing mirror, 12, focus on output coupling mirror, 13, 730nm output optical fibre, 14, 730nm resonator cavity, 15, secondary light fibre circle, 16, secondary light fibre outfan, 17, secondary light fibre bonder, 18, 905nm focuses on output coupling mirror, and 19, 905nm output optical fibre, 20, 905nm gain crystal, 21, 905nm outgoing mirror, 22, basic frequency laser crystal, 23, two grades of input mirrors, 24, 905nm gain resonator cavity, 25, 3-stage optical fiber circle, 26, 1500nm output optical fibre, 27, 1500nm focuses on output coupling mirror, and 28, 1500nm outgoing mirror, 29, 1500nm periodically poled lithium niobate laser crystal, 30, parametric oscillation input mirror, 31, 730nm parametric oscillation basic frequency laser crystal, 32, 3-stage optical fiber input mirror, 33, three wavelength parameter bonders, 34, 3-stage optical fiber bonder, 35, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber, 36, 3-stage optical fiber outfan, 37, three wavelength parameter coupling transmission optical fibers, 38, 2489nm four-wave mixing periodically poled lithium niobate laserresonator, 39, three wavelength input mirrors, 40, 2489nm four-wave mixing periodically poled lithium niobate laser crystal, 41, 2489nm outgoing mirror, 42, 2489nm focuses on output coupling mirror, and 43, 2489nm output optical fibre, 44, 2489nm laser exports, and 45, 730nm laser output optical fibre, 46, 3-stage optical fiber structure.
Detailed description of the invention:
2489nm four-wave mixing periodically poled lithium niobate laserresonator 38 is set, 730nm splitting optical fiber circle is set, flashlight 2489nm is set, ideler frequency light 730nm, there is the structure of the periodically poled lithium niobate laserresonator 38 of four-wave mixing in pump light I1500nm and pump light II905nm, 2489nm is set at 2489nm four-wave mixing periodically poled lithium niobate laserresonator 38 outfan and focuses on output coupling mirror 42 coupling access 2489nm output optical fibre 43, rear at 730nm output optical fibre 13 arranges 730nm splitting optical fiber circle 47, the 730nm laser output 45 of 730nm splitting optical fiber circle 47 is set, ideler frequency light 730nm, pump light I1500nm and pump light II905nm with derive from three wavelength parameter coupling transmission optical fibers 37, three wavelength parameter bonders 33 are set before three wavelength parameter coupling transmission optical fibers 37, by 730nm output optical fibre 13, 905nm output optical fibre 19 couples access three wavelength parameter bonders 33 with 1500nm output optical fibre 26, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 is set, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 focuses on output coupling mirror 27 by the 1500nm of its outfan and is linked in 1500nm output optical fibre 26, the input in 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 is connected on 3-stage optical fiber outfan 36 by 3-stage optical fiber bonder 34, 3-stage optical fiber outfan 36 is drawn by the 3-stage optical fiber circle 25 of 3-stage optical fiber structure 46,905nm gain resonator cavity 24 is set, 905nm gain resonator cavity 24 focuses on output coupling mirror 18 by the 905nm of its outfan and is linked in 905nm output optical fibre 19,905nm gain resonator cavity 24 is connected on secondary light fibre outfan 16 by the secondary light fibre bonder 17 of its input, and secondary light fibre outfan 16 is drawn from the secondary light fibre circle 15 of 3-stage optical fiber structure 46, 730nm resonator cavity 14 is set, the outfan of 730nm resonator cavity 14 focuses on output coupling mirror 12 by 730nm and is linked in 730nm output optical fibre 13,730nm resonator cavity 14 is connected on one-level fiber-optic output 7 by the one-level fiber coupler 8 of its input, and one-level fiber-optic output 7 is drawn by the one-level fiber turns 6 of 3-stage optical fiber structure 46, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 is set, set gradually from its input: 3-stage optical fiber input mirror 32,730nm parametric oscillation basic frequency laser crystal 31, parametric oscillation input mirror 30,1500nm periodically poled lithium niobate laser crystal 29,1500nm outgoing mirror 28 and the 1500nm focusing output coupling mirror of outfan, thus constitute 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35, 905nm gain resonator cavity 24 is set, set gradually from its input: two grades input mirror 23, basic frequency laser crystal 22,905nm gain crystal 20,905nm outgoing mirror 21 and the 905nm focusing output coupling mirror 18 of outfan, thus constitute 905nm gain resonator cavity 24, 730nm resonator cavity 14 is set, set gradually from its input: one-level input mirror 9, 730nm laser crystal 10, the 730nm of 730nm outgoing mirror 11 and outfan focuses on output coupling mirror 12, thus constitute 730nm resonator cavity 14, 3-stage optical fiber structure 46 is set, 3-stage optical fiber structure 46 is by one-level fiber turns 6, secondary light fibre circle 15 and 3-stage optical fiber circle 25 are integrally connected and form, one-level fiber turns 6 is connected on semiconductor module 2 by 905nm pumping coupler 4, semiconductor module 2 is powered by semiconductor module block power supply 5, above-mentioned whole optical element is all arranged on optical rail and light facility 1, optical rail and light facility 1 arrange fan 3, totally constitute 2489nm, 730nm dual-wavelength optical-fiber output laser structure.
Work process:
Semiconductor module block power supply 5 supplies electricity to semiconductor module 2 and powers, semiconductor module 2 is launched 905nm laser and is coupled into one-level fiber turns 6 through 905nm pumping coupler 4, secondary light fibre circle 15 and 3-stage optical fiber circle 25 hence into 3-stage optical fiber structure 46, 905nm laser obtains gain in 3-stage optical fiber structure 46, 3-stage optical fiber outfan 36 is drawn from by 3-stage optical fiber circle 25, input 905nm laser enters 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35, the 730nm laser generated through the 730nm parametric oscillation basic frequency laser crystal 31 in 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 goes pump optical parametric oscillation to generate 1500nm laser, focus on output coupling mirror 27 through 1500nm and be coupled in 1500nm output optical fibre 26, by in its input 1500nm laser to three wavelength parameter bonders 33, secondary light fibre outfan 16 is drawn from by secondary light fibre circle 15, input 905nm laser enters 905nm gain resonator cavity 24, generate fundamental frequency light through the basic frequency laser crystal 22 of 905nm gain resonator cavity 24, through 905nm gain resonator cavity 24, gain output 905nm laser occurs, focus on output coupling mirror 18 through 905nm and be coupled in 905nm output optical fibre 19, by its input 905nm laser to three wavelength parameter bonders 33,One-level fiber-optic output 7 is drawn from by one-level fiber turns 6, input 905nm laser enters 730nm resonator cavity 14,730nm resonator cavity 14 generates 730nm basic frequency laser, focus on output coupling mirror 12 through 730nm and be coupled in 730nm output optical fibre 13, by its input 730nm laser to three wavelength parameter bonders 33, thus, 1500nm laser, 730nm laser and 905nm laser are coupled into 2489nm four-wave mixing periodically poled lithium niobate laserresonator 38 through three wavelength parameter bonders 33, flashlight 2489nm, ideler frequency light 730nm, there is four-wave mixing effect in pump light I1500nm and pump light II905nm, flashlight 2489nm is made to occur, gain, flashlight 2489nm focuses on output coupling mirror 42 through 2489nm and exports 2489nm laser output 44 with 2489nm output optical fibre 43, at the 730nm splitting optical fiber circle 45 beam splitting output 730nm laser that the rear of 730nm output optical fibre 13 is arranged, 730nm is exported through outfan.
Claims (1)
1. laser radar 2489nm, 730nm dual-wavelength optical-fiber output laser, it is characterized by, at 730nm laser output optical fibre rear, 730nm splitting optical fiber circle is set, beam splitting one road 730nm laser exports through 730nm laser output, the structure that the periodically poled lithium niobate laserresonator of four-wave mixing occurs with pump light II905nm for flashlight 2489nm, ideler frequency light 730nm, pump light I1500nm is set, four-wave mixing generates the output of 2489nm optical-fiber laser, constitutes 2489nm, 730nm dual-wavelength optical-fiber output laser structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930450.5A CN105680304A (en) | 2015-12-11 | 2015-12-11 | Optical fiber output laser with dual wavelengths of 2489nm and 730nm for laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510930450.5A CN105680304A (en) | 2015-12-11 | 2015-12-11 | Optical fiber output laser with dual wavelengths of 2489nm and 730nm for laser radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105680304A true CN105680304A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510930450.5A Pending CN105680304A (en) | 2015-12-11 | 2015-12-11 | Optical fiber output laser with dual wavelengths of 2489nm and 730nm for laser radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105680304A (en) |
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- 2015-12-11 CN CN201510930450.5A patent/CN105680304A/en active Pending
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Application publication date: 20160615 |