CN105356236A - 808nm, 872nm, 1319nm and 1500nm four-wavelength optical fiber output laser used for laser radar - Google Patents

Abstract

The invention provides a 808nm, 872nm, 1319nm and 1500nm four-wavelength optical fiber output laser used for a laser radar. A 1500nm beam splitting fiber loop is arranged on the tail end of a 1500nm laser output optical fiber, and a path of 1500nm laser output is split out; a 1319nm beam splitting fiber loop is arranged on the tail end of a 1319nm laser output optical fiber, and a path of 1319nm laser output is split out; and a 808nm beam splitting fiber loop is arranged on the tail end of a 808nm laser output optical fiber, and a path of 808nm laser output is split out. 872nm signal light, 1500nm idle light, 1319nm pump light I and 808nm pump light II enter a 872nm four-wave mixing periodically-poled lithium niobate laser resonator, a four-wave mixing effect is generated, the 872nm signal light is output, and finally 808nm, 872nm, 1319nm and 1500nm four-wavelength optical fiber lasers are output.

Description

A kind of laser radar 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength fiber output laser

Technical field: laser and applied technical field.

Technical background:

808nm, 872nm, 1319nm, 1500nm tetra-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 808nm, 872nm, 1319nm, 1500nm tetra-using light source such as analyzing and testing of 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 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength fiber output laser, at 1500nm Laser output optical fiber rear, 1500nm splitting optical fiber circle is set, beam splitting one road 1500nm Laser output, at 1319nm Laser output optical fiber rear, 1319nm splitting optical fiber circle is set, beam splitting one road 1319nm Laser output, at 808nm Laser output optical fiber rear, 808nm splitting optical fiber circle is set, beam splitting one road 808nm exports, flashlight 872nm, ideler frequency light 1500nm, pump light I1319nm and pump light II808nm enters 872nm four wave mixing periodically poled lithium niobate laserresonator, there is four-wave mixing effect, produce flashlight 872nm to export, finally export 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength fiber Laser output.

Scheme one, 872nm 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 872nm, ideler frequency light 1500nm, pump light I1319nm and pump light II808nm, arranges 872nm focus on output coupling mirror coupling access 872nm output optical fibre at 872nm four wave mixing periodically poled lithium niobate laserresonator output.

Scheme two, 1500nm, 1319nm, 808nm laser beam splitter fiber turns is set respectively

At 1500nm output optical fibre rear, 1500nm splitting optical fiber circle is set, beam splitting one road 1500nm laser exports through 1500nm laser output, at 1319nm Laser output optical fiber rear, 1319nm splitting optical fiber circle is set, beam splitting one road 1319nm laser exports through 1319nm laser output, arrange 808nm splitting optical fiber circle at 808nm Laser output optical fiber rear, beam splitting one road 808nm laser exports through 808nm 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, 808nm gain resonant cavity is set

808nm gain resonant cavity is set, sets gradually from its input: the 808nm of secondary input mirror, basic frequency laser crystal, 808nm gain crystal, 808nm outgoing mirror and output focuses on output coupling mirror, forms 808nm gain resonant cavity thus.

Scheme five, 1319nm resonant cavity is set

1319nm resonant cavity is set, 1319nm resonant cavity is set, set gradually from its input: the 1319nm of one-level input mirror, 1319nm laser crystal, 1319nm outgoing mirror and output focuses on output coupling mirror, forms 1319nm 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 808nm 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 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength fiber output laser, at 1500nm output optical fibre rear, 1500nm splitting optical fiber circle is set, beam splitting one road 1500nm laser exports through 1500nm laser output, at 1319nm Laser output optical fiber rear, 1319nm splitting optical fiber circle is set, beam splitting one road 1319nm laser exports through 1319nm laser output, at 808nm Laser output optical fiber rear, 808nm splitting optical fiber circle is set, beam splitting one road 808nm laser exports through 808nm laser output, signalization light 872nm, ideler frequency light 1500nm, there is the structure of the periodically poled lithium niobate laserresonator of four wave mixing in pump light I1319nm and pump light II808nm, four wave mixing generates 872nm optical-fiber laser and exports, form 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength 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, 808nm 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, 1319nm laser crystal, 11, 1319nm outgoing mirror, 12, focus on output coupling mirror, 13, 1319nm output optical fibre, 14, 1319nm resonant cavity, 15, secondary fiber turns, 16, secondary fiber-optic output, 17, secondary fiber coupler, 18, 808nm focuses on output coupling mirror, and 19, 808nm output optical fibre, 20, 808nm gain crystal, 21, 808nm outgoing mirror, 22, basic frequency laser crystal, 23, secondary input mirror, 24, 808nm 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, 1319nm 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, 872nm four wave mixing periodically poled lithium niobate laserresonator, 39, three-wavelength input mirror, 40, 872nm four wave mixing periodically poled lithium niobate laser crystal, 41, 872nm outgoing mirror, 42, 872nm focuses on output coupling mirror, and 43, 872nm output optical fibre, 44, 872nm Laser output, 45, 1319nm Laser output optical fiber, 46, 1500nm output optical fibre, 47, 1319nm splitting optical fiber circle, 48, 1500nm splitting optical fiber circle, 49, 808nm output optical fibre, 50, 808nm splitting optical fiber circle, 51, 3-stage optical fiber structure.

Embodiment:

872nm four wave mixing periodically poled lithium niobate laserresonator 38 is set, 1500nm splitting optical fiber circle 48 is set, 1319nm splitting optical fiber circle is set, 808nm splitting optical fiber circle is set, signalization light 872nm, ideler frequency light 1500nm, there is the structure of the periodically poled lithium niobate laserresonator 38 of four wave mixing in pump light I1319nm and pump light II808nm, 872nm is set at 872nm four wave mixing periodically poled lithium niobate laserresonator 38 output and focuses on output coupling mirror 42 coupling access 872nm 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 1319nm output optical fibre 13,1319nm splitting optical fiber circle 47 is set, the 1319nm laser output 45 of 1319nm splitting optical fiber circle 47 is set, ideler frequency light 1500nm, pump light I1319nm and pump light II808nm 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 1319nm output optical fibre 13, 808nm 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 51, 808nm gain resonant cavity 24 is set, 808nm gain resonant cavity 24 focuses on output coupling mirror 18 by the 808nm of its output and is linked in 808nm output optical fibre 19,808nm 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 51, 1319nm resonant cavity 14 is set, the output of 1319nm resonant cavity 14 focuses on output coupling mirror 12 by 1319nm and is linked in 1319nm output optical fibre 13,1319nm 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 51, 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 is set, set gradually from its input: 3-stage optical fiber input mirror 32,1319nm 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, 808nm gain resonant cavity 24 is set, set gradually from its input: secondary input mirror 23, basic frequency laser crystal 22,808nm gain crystal 20,808nm outgoing mirror 21 focus on output coupling mirror 18 with the 808nm of output, form 808nm gain resonant cavity 24 thus, 1319nm resonant cavity 14 is set, set gradually from its input: one-level input mirror 9, 1319nm laser crystal 10, 1319nm outgoing mirror 11 focuses on output coupling mirror 12 with the 1319nm of output, form 1319nm resonant cavity 14 thus, 3-stage optical fiber structure 51 is set, 3-stage optical fiber structure 51 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 808nm 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 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength 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 808nm laser and is coupled into one-level fiber turns 6 through 808nm pumping coupler 4, thus enter secondary fiber turns 15 and the 3-stage optical fiber circle 25 of 3-stage optical fiber structure 51, 808nm laser obtains gain in 3-stage optical fiber structure 51, 3-stage optical fiber output 36 is drawn from by 3-stage optical fiber circle 25, input 808nm laser enters 1500nm periodically poled lithium niobate laser parameter oscillating tank chamber 35, the 1319nm laser that 1319nm 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 808nm laser enters 808nm gain resonant cavity 24, basic frequency laser crystal 22 through 808nm gain resonant cavity 24 generates fundamental frequency light, through 808nm gain resonant cavity 24, gain output 808nm laser occurs, focusing on output coupling mirror 18 through 808nm is coupled in 808nm output optical fibre 19, by its input 808nm laser in three-wavelength parameter coupler 33, one-level fiber-optic output 7 is drawn from by one-level fiber turns 6, input 808nm laser enters 1319nm resonant cavity 14,1319nm resonant cavity 14 generates 1319nm basic frequency laser, focusing on output coupling mirror 12 through 1319nm is coupled in 1319nm output optical fibre 13, by its input 1319nm laser in three-wavelength parameter coupler 33, thus, 1500nm laser, 1319nm laser and 808nm laser are coupled into 872nm four wave mixing periodically poled lithium niobate laserresonator 38 through three-wavelength parameter coupler 33, flashlight 872nm, ideler frequency light 1500nm, there is four-wave mixing effect in pump light I1319nm and pump light II808nm, flashlight 872nm is occurred, gain, flashlight 872nm focuses on output coupling mirror 42 through 872nm and exports 872nm Laser output 44 with 872nm output optical fibre 43, 1500nm splitting optical fiber circle 48 beam splitting arranged at the rear of 1500nm output optical fibre 26 exports 1500nm laser, 1500nm is exported through 1500nm laser output 46, 1319nm splitting optical fiber circle 47 beam splitting arranged at the rear of 1319nm output optical fibre 13 exports 1319nm laser, 1319nm is exported through output 45.

Claims (1)

1. a laser radar 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength fiber output laser, it is characterized by: at 1500nm output optical fibre rear, 1500nm splitting optical fiber circle is set, beam splitting one road 1500nm laser exports through 1500nm laser output, at 1319nm Laser output optical fiber rear, 1319nm splitting optical fiber circle is set, beam splitting one road 1319nm laser exports through 1319nm laser output, at 808nm Laser output optical fiber rear, 808nm splitting optical fiber circle is set, beam splitting one road 808nm laser exports through 808nm laser output, signalization light 872nm, ideler frequency light 1500nm, there is the structure of the periodically poled lithium niobate laserresonator of four wave mixing in pump light I1319nm and pump light II808nm, four wave mixing generates 872nm optical-fiber laser and exports, form 808nm, 872nm, 1319nm, 1500nm tetra-long wavelength fiber output laser structure.