CN105322427A - 2043 nm/905 nm/780 nm three-wavelength optical fiber output laser for laser radars - Google Patents

Abstract

The invention discloses a 2043 nm/905 nm/780 nm three-wavelength optical fiber output laser for laser radars. A 780 nm laser output optical fiber tail-section is provided with a 780 nm beam-splitting optical fiber coil, a first beam-splitting path outputs a laser with a wavelength of 780 nm, a 905 nm laser output optical fiber tail-section is provided with a 905 nm beam-splitting optical fiber coil, a first beam-splitting path outputs a laser with a wavelength of 905 nm, a signal light with a wavelength of 2043 nm, an idler-frequency light with a wavelength of 780 nm, a pumping light I with a wavelength of 1500 nm and a pumping light II with a wavelength of 905 nm enter a 2043 nm four-wave mixing PPLN (periodically poled lithium niobate) laser resonant cavity to have a four-wave mixing effect, then a signal light with a wavelength of 2043 nm is generated and outputted, and finally, 2043nm/905nm/780nm three-wavelength fiber laser outputs are outputted.

Description

A kind of laser radar 2043nm, 905nm, 780nm three-wavelength optical fiber output laser

Technical field: laser and applied technical field.

Technical background:

2043nm, 905nm, 780nm three-wavelength laser, the laser applied for laser radar spectral detection, lasing light emitter, instrumental analysis etc., it can be used as laser radar optical fiber and passes the using light sources such as the analyzing and testing of 2043nm, 905nm, 780nm three-wavelength sensor, and it is also for laser and optoelectronic areas such as laser radar optical communications; Fiber laser is as the representative of third generation laser technology, and having mercy on property, the glass material with glass optical fiber low cost of manufacture and optical fiber have extremely low bulk area ratio, and rapid heat dissipation, loss are low with conversion efficiency comparatively advantages of higher, and range of application constantly expands.

Summary of the invention:

A kind of laser radar 2043nm, 905nm, 780nm three-wavelength optical fiber output laser, at 780nm Laser output optical fiber rear, 780nm splitting optical fiber circle is set, beam splitting one road 780nm Laser output, at 905nm Laser output optical fiber rear, 905nm splitting optical fiber circle is set, beam splitting one road 905nm exports, flashlight 2043nm, ideler frequency light 780nm, pump light I1500nm and pump light II905nm enters 2043nm four wave mixing periodically poled lithium niobate laserresonator, there is four-wave mixing effect, produce flashlight 2043nm to export, finally export 2043nm, 905nm, 780nm three-wavelength optical-fiber laser exports.

Scheme one, 2043nm tetra-long wavelength fiber laser structure.

There is the structure of the periodically poled lithium niobate laserresonator 38 of four wave mixing in signalization light 2043nm, ideler frequency light 780nm, pump light I1500nm and pump light II905nm, arranges 2043nm focus on output coupling mirror coupling access 2043nm output optical fibre at 2043nm four wave mixing periodically poled lithium niobate laserresonator output.

Scheme two, 780nm, 905nm laser beam splitter fiber turns is set respectively

At 780nm Laser output optical fiber rear, 780nm splitting optical fiber circle is set, beam splitting one road 780nm laser exports through 780nm laser output, arrange 905nm splitting optical fiber circle at 905nm Laser output optical fiber rear, beam splitting one road 905nm laser exports through 905nm 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: the 1500nm of 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 output focuses on output coupling mirror, forms 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber thus.

Scheme four, 905nm gain resonant cavity is set

905nm gain resonant cavity is set, sets gradually from its input: the 905nm of secondary input mirror, basic frequency laser crystal, 905nm gain crystal, 905nm outgoing mirror and output focuses on output coupling mirror, forms 905nm gain resonant cavity thus.

Scheme five, 780nm resonant cavity is set

780nm resonant cavity is set, 780nm resonant cavity is set, set gradually from its input: the 780nm of one-level input mirror, 780nm laser crystal, 780nm outgoing mirror and output focuses on output coupling mirror, forms 780nm resonant cavity thus.

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 fiber turns and 3-stage optical fiber circle and forms, one-level fiber turns is connected on semiconductor module by 905m pumping coupler, semiconductor module is by semiconductor module Power supply, above-mentioned whole optical element is all arranged on optical rail and ray machine tool, and optical rail and ray machine tool arrange fan 3.

Core content of the present invention:

A kind of laser radar 2043nm, 905nm, 780nm three-wavelength optical fiber output laser, at 780nm Laser output optical fiber rear, 780nm splitting optical fiber circle is set, beam splitting one road 780nm laser exports through 780nm laser output, at 905nm Laser output optical fiber rear, 905nm splitting optical fiber circle is set, beam splitting one road 905nm laser exports through 905nm laser output, signalization light 2043nm, ideler frequency light 780nm, there is the structure of the periodically poled lithium niobate laserresonator of four wave mixing in pump light I1500nm and pump light II905nm, four wave mixing generates 2043nm optical-fiber laser and exports, form 2043nm, 905nm, 780nm three-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 ray machine tool, 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, 780nm laser crystal, 11, 780nm outgoing mirror, 12, focus on output coupling mirror, 13, 780nm output optical fibre, 14, 780nm resonant cavity, 15, secondary fiber turns, 16, secondary fiber-optic output, 17, secondary fiber coupler, 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, secondary input mirror, 24, 905nm gain resonant 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, 780nm parametric oscillation basic frequency laser crystal, 32, 3-stage optical fiber input mirror, 33, three-wavelength parameter coupler, 34, 3-stage optical fiber coupler, 35, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber, 36, 3-stage optical fiber output, 37, three-wavelength parameter coupling transmission optical fiber, 38, 2043nm four wave mixing periodically poled lithium niobate laserresonator, 39, three-wavelength input mirror, 40, 2043nm four wave mixing periodically poled lithium niobate laser crystal, 41, 2043nm outgoing mirror, 42, 2043nm focuses on output coupling mirror, and 43, 2043nm output optical fibre, 44, 2043nm Laser output, 45, 780nm Laser output optical fiber, 46, 780nm splitting optical fiber circle, 47, 905nm output optical fibre, 48, 905nm splitting optical fiber circle, 49, 3-stage optical fiber structure.

Embodiment:

2043nm four wave mixing periodically poled lithium niobate laserresonator 38 is set, 780nm splitting optical fiber circle is set, 905nm splitting optical fiber circle is set, signalization light 2043nm, ideler frequency light 780nm, there is the structure of the periodically poled lithium niobate laserresonator 38 of four wave mixing in pump light I1500nm and pump light II905nm, 2043nm is set at 2043nm four wave mixing periodically poled lithium niobate laserresonator 38 output and focuses on output coupling mirror 42 coupling access 2043nm output optical fibre 43, at the rear of 1500nm output optical fibre 26,1500nm splitting optical fiber circle 48 is set, the 1500nm Laser output optical fiber 46 of 1500nm splitting optical fiber circle 48 is set, at the rear of 780nm output optical fibre 13,780nm splitting optical fiber circle 47 is set, the 780nm laser output 45 of 780nm splitting optical fiber circle 47 is set, ideler frequency light 780nm, pump light I1500nm and pump light II905nm with derive from three-wavelength parameter coupling transmission optical fiber 37, three-wavelength parameter coupler 33 is set before three-wavelength parameter coupling transmission optical fiber 37, by 780nm output optical fibre 13, 905nm output optical fibre 19 is coupled with 1500nm output optical fibre 26 and accesses three-wavelength parameter coupler 33, 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 output 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 output 36 by 3-stage optical fiber coupler 34, 3-stage optical fiber output 36 is drawn by the 3-stage optical fiber circle 25 of 3-stage optical fiber structure 49, 905nm gain resonant cavity 24 is set, 905nm gain resonant cavity 24 focuses on output coupling mirror 18 by the 905nm of its output and is linked in 905nm output optical fibre 19,905nm gain resonant cavity 24 is connected on secondary fiber-optic output 16 by the secondary fiber coupler 17 of its input, and secondary fiber-optic output 16 is drawn from the secondary fiber turns 15 of 3-stage optical fiber structure 49, 780nm resonant cavity 14 is set, the output of 780nm resonant cavity 14 focuses on output coupling mirror 12 by 780nm and is linked in 780nm output optical fibre 13,780nm resonant 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 49, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 is set, set gradually from its input: 3-stage optical fiber input mirror 32,780nm parametric oscillation basic frequency laser crystal 31, parametric oscillation input mirror 30,1500nm periodically poled lithium niobate laser crystal 29,1500nm outgoing mirror 28 focus on output coupling mirror with the 1500nm of output, form 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 thus, 905nm gain resonant cavity 24 is set, set gradually from its input: secondary input mirror 23, basic frequency laser crystal 22,905nm gain crystal 20,905nm outgoing mirror 21 focus on output coupling mirror 18 with the 905nm of output, form 905nm gain resonant cavity 24 thus, 780nm resonant cavity 14 is set, set gradually from its input: one-level input mirror 9, 780nm laser crystal 10, 780nm outgoing mirror 11 focuses on output coupling mirror 12 with the 780nm of output, form 780nm resonant cavity 14 thus, 3-stage optical fiber structure 49 is set, 3-stage optical fiber structure 49 is by one-level fiber turns 6, secondary fiber turns 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 ray machine tool 1, optical rail and ray machine tool 1 arrange fan 3, overall formation 2043nm, 905nm, 780nm three-wavelength optical fiber output laser structure.

The course of work:

Semiconductor module block power supply 5 is powered and to be powered to semiconductor module 2, semiconductor module 2 is launched 905nm laser and is coupled into one-level fiber turns 6 through 905nm pumping coupler 4, thus enter secondary fiber turns 15 and the 3-stage optical fiber circle 25 of 3-stage optical fiber structure 49, 905nm laser obtains gain in 3-stage optical fiber structure 49, 3-stage optical fiber output 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 780nm laser that 780nm parametric oscillation basic frequency laser crystal 31 through 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 generates goes pump optical parametric oscillation to generate 1500nm laser, focusing on output coupling mirror 27 through 1500nm is coupled in 1500nm output optical fibre 26, by its input 1500nm laser in three-wavelength parameter coupler 33, secondary fiber-optic output 16 is drawn from by secondary fiber turns 15, input 905nm laser enters 905nm gain resonant cavity 24, basic frequency laser crystal 22 through 905nm gain resonant cavity 24 generates fundamental frequency light, through 905nm gain resonant cavity 24, gain output 905nm laser occurs, focusing on output coupling mirror 18 through 905nm is coupled in 905nm output optical fibre 19, by its input 905nm laser in three-wavelength parameter coupler 33, one-level fiber-optic output 7 is drawn from by one-level fiber turns 6, input 905nm laser enters 780nm resonant cavity 14,780nm resonant cavity 14 generates 780nm basic frequency laser, focusing on output coupling mirror 12 through 780nm is coupled in 780nm output optical fibre 13, by its input 780nm laser in three-wavelength parameter coupler 33, thus, 1500nm laser, 780nm laser and 905nm laser are coupled into 2043nm four wave mixing periodically poled lithium niobate laserresonator 38 through three-wavelength parameter coupler 33, flashlight 2043nm, ideler frequency light 780nm, there is four-wave mixing effect in pump light I1500nm and pump light II905nm, flashlight 2043nm is occurred, gain, flashlight 2043nm focuses on output coupling mirror 42 through 2043nm and exports 2043nm Laser output 44 with 2043nm output optical fibre 43, 780nm splitting optical fiber circle 47 beam splitting arranged at the rear of 780nm output optical fibre 13 exports 780nm laser, 780nm is exported through output 45.

Claims (1)

1. a laser radar 2043nm, 905nm, 780nm three-wavelength optical fiber output laser, it is characterized by, at 780nm Laser output optical fiber rear, 780nm splitting optical fiber circle is set, beam splitting one road 780nm laser exports through 780nm laser output, at 905nm Laser output optical fiber rear, 905nm splitting optical fiber circle is set, beam splitting one road 905nm laser exports through 905nm laser output, signalization light 2043nm, ideler frequency light 780nm, there is the structure of the periodically poled lithium niobate laserresonator of four wave mixing in pump light I1500nm and pump light II905nm, four wave mixing generates 2043nm optical-fiber laser and exports, form 2043nm, 905nm, 780nm three-wavelength optical fiber output laser structure.