CN105896286A - Medical 892nm and 750nm dual-wavelength optical fiber output laser - Google Patents

Abstract

The invention relates to a medical 892nm and 750nm dual-wavelength optical fiber output laser, which is characterized in that a four-wave mixing periodically poled lithium niobate laser resonant cavity is arranged; a 750nm beam splitting optical fiber ring is arranged at the tail section of a 750nm laser output optical fiber, and a path of 750nm laser output is branched; and 892nm signal light, 750nm idler frequency light, 1064nm pump light I and 660nm pump light II enter the 892nm four-wave mixing periodically poled lithium niobate laser resonant cavity, a four-wave mixing effect is generated, 892nm signal light output is generated, and finally 892nm and 750nm dual-wavelength optical fiber laser output is performed.

Description

A kind of medical 892nm, 750nm dual-wavelength optical-fiber output laser

Technical field: laser instrument and applied technical field.

Technical background:

892nm, 750nm dual-wavelength laser, is should for medical spectral detection, lasing light emitter, instrumental analysis etc. Laser, it can as medical optical fiber pass 892nm, 750nm dual wavelength sensor analysis detection etc. should use up Source, it is additionally operable to the laser such as medical optical communication and optoelectronic areas；Optical fiber laser is as third generation laser skill The representative of art, has glass optical fiber low cost of manufacture and has extremely low body with the having mercy on property of optical fiber, glass material Long-pending area ratio, rapid heat dissipation, is lost low with conversion efficiency relatively advantages of higher, and range of application constantly expands.

Summary of the invention:

A kind of medical 892nm, 750nm dual-wavelength optical-fiber output laser, arranges the cycle pole of four-wave mixing Change Lithium metaniobate laserresonator, 750nm splitting optical fiber circle is set at 750nm laser output optical fibre rear, point Shu Yilu 750nm laser exports, flashlight 892nm, ideler frequency light 750nm, pump light I 1064nm and pumping Light II 660nm enters 892nm four-wave mixing periodically poled lithium niobate laserresonator, and four-wave mixing effect occurs, Produce flashlight 892nm output, finally export the output of 892nm, 750nm dual-wavelength optical-fiber laser.

Scheme one, 892nmmmm tetra-long wavelength fiber laser structure.

Arrange flashlight 892nm, ideler frequency light 750nm, pump light I 1064nm occur four with pump light II 660nm The structure of the periodically poled lithium niobate laserresonator 38 of wave mixing, sets gradually three wavelength from its input defeated Enter mirror 39,892nm four-wave mixing periodically poled lithium niobate laser crystal 40,892nm outgoing mirror 41,892nm Focusing on output coupling mirror 42,892nm focuses on output coupling mirror 42 coupling and accesses 892nm output optical fibre 43.

Scheme two, it is respectively provided with 750nm, 660nm laser beam splitter fiber turns

Arranging 750nm splitting optical fiber circle at 750nm laser output optical fibre rear, beam splitting one road 750nm laser is defeated Going out, arrange 660nm splitting optical fiber circle at 660nm laser output optical fibre rear, beam splitting one road 660nm exports.

Scheme three, 750nm periodically poled lithium niobate laser parameter oscillating tank chamber is set

750nm periodically poled lithium niobate laser parameter oscillating tank chamber is set, sets gradually from its input: 3-stage optical fiber input mirror, 1064nm parametric oscillation basic frequency laser crystal, parametric oscillation input mirror, 1500nm week Phase poled lithium niobate laser crystal, 1500nm outgoing mirror, 750nm frequency-doubling crystal focus on the 750nm of outfan Output coupling mirror, thus constitutes 750nm periodically poled lithium niobate laser parameter oscillating tank chamber.

Scheme four, 660nm frequency multiplication resonator cavity is set

660nm frequency multiplication resonator cavity is set, sets gradually from its input: two grades of inputs mirror, 1319nm bases Frequency laser crystal, 660nm frequency-doubling crystal, 660nm outgoing mirror 21 focus on the 660nm of outfan and couple output Mirror, thus constitutes 660nm frequency multiplication resonator cavity.

Scheme five, 1064nm resonator cavity is set

1064nm resonator cavity is set, 1064nm resonator cavity is set, set gradually from its input: one-level is defeated The 1064nm entering mirror, 1064nm laser crystal, 1064nm outgoing mirror 11 and outfan focuses on output coupling mirror, Thus constitute 1064nm resonator cavity.

Scheme six, 3-stage optical fiber structure is set

Arranging 3-stage optical fiber structure, 3-stage optical fiber structure is by one-level fiber turns, secondary light fibre circle and 3-stage optical fiber Circle is integrally connected and forms, and one-level fiber turns is connected on semiconductor module by 808nm pumping coupler, and half Conductor module is powered by semiconductor module block power supply, and above-mentioned whole optical elements are all arranged on optical rail and ray machine On tool, optical rail and light facility arrange fan 3.

Scheme seven, work process

Semiconductor module block power supply supplies electricity to semiconductor module and powers, and semiconductor module launches 808nm laser warp 808nm pumping coupler is coupled into one-level fiber turns, hence into the secondary light fibre circle of 3-stage optical fiber structure With 3-stage optical fiber circle, 808nm laser obtains gain in 3-stage optical fiber structure, draws from by 3-stage optical fiber circle 3-stage optical fiber outfan, it is humorous that input 808nm laser enters the vibration of 750nm periodically poled lithium niobate laser parameter Shake chamber, and the 1064nm parametric oscillation fundamental frequency through 750nm periodically poled lithium niobate laser parameter oscillating tank chamber swashs The 1064nm laser that luminescent crystal generates goes pump optical parametric oscillation to generate 1500nm laser, defeated through 1500nm Appearance enters 750nm frequency-doubling crystal frequency multiplication output 750nm laser, focuses on output coupling mirror output through 750nm, Thus constitute 750nm periodically poled lithium niobate laser parameter oscillating tank chamber., focus on coupling output through 750nm Mirror is coupled in 750nm output optical fibre, by its input 750nm laser to three wavelength parameter bonders；From Being drawn secondary light fibre outfan by secondary light fibre circle, input 808nm laser enters 660nm frequency multiplication resonator cavity, Humorous through 660nm frequency multiplication through the 1319nm basic frequency laser crystal generation 1064nm fundamental frequency of 660nm frequency multiplication resonator cavity Shake chamber generation frequency multiplication output 660nm laser, focuses on output coupling mirror through 660nm and is coupled to 660nm output light In fibre, by its input 660nm laser to three wavelength parameter bonders；One-level is drawn from by one-level fiber turns Fiber-optic output, input 808nm laser enters 1064nm resonator cavity, and 1064nm resonator cavity generates 1064nm Basic frequency laser, focuses on output coupling mirror through 1064nm and is coupled in 1064nm output optical fibre, it input 1064nm laser is in three wavelength parameter bonders；Thus, 750nm laser, 1064nm laser and 660nm Laser is coupled into 892nm four-wave mixing periodically poled lithium niobate laserresonator through three wavelength parameter bonders, Four-wave mixing is there is in flashlight 892nm, ideler frequency light 750nm, pump light I 1064nm with pump light II 660nm Effect, makes flashlight 892nm generation, gain, and flashlight 892nm focuses on output coupling mirror coupling through 892nm Close 892nm output optical fibre, output 892nm laser output, arrange at 750nm laser output optical fibre rear 750nm splitting optical fiber circle, beam splitting one road 750nm laser export, finally export 892nm, 660nm, 1064nm, 750nm tetra-long wavelength fiber laser exports.

The core content of the present invention:

A kind of medical 892nm, 750nm dual-wavelength optical-fiber output laser, at 750nm laser output optical fibre tail Section arranges 750nm splitting optical fiber circle, and beam splitting one road 750nm laser exports, and arranges flashlight 892nm, ideler frequency Light 750nm, pump light I 1064nm and pump light II 660nm occur the periodically poled lithium niobate of four-wave mixing to swash The structure of optical cavity, four-wave mixing generates the output of 892nm optical-fiber laser, constitutes 892nm, 750nm double wave Long optical fibers output laser structure.

750nm splitting optical fiber circle, beam splitting one road 750nm laser export, flashlight 892nm, ideler frequency light 750nm, It is humorous that pump light I 1064nm and pump light II 660nm enters 892nm four-wave mixing periodically poled lithium niobate laser Shake chamber, and four-wave mixing effect occurs, and generates the output of flashlight 892nm laser, forms 892nm, 750nm double Long wavelength fiber laser exports.

Accompanying drawing illustrates:

Accompanying drawing is the structure chart of this patent, and accompanying drawing is wherein: 1, optical rail and light facility, 2, quasiconductor 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, 10,1064nm laser brilliant Body, 11,1064nm outgoing mirror, 12, focus on output coupling mirror, 13,1064nm output optical fibre, 14,1064nm Resonator cavity, 15, secondary light fibre circle, 16, secondary light fibre outfan, 17, secondary light fibre bonder, 18, 660nm focuses on output coupling mirror, and 19,660nm output optical fibre, 20,660nm frequency-doubling crystal, 21,660nm Outgoing mirror, 22,1319nm basic frequency laser crystal, 23, two grades of input mirrors, 24,660nm frequency multiplication resonator cavity, 25,3-stage optical fiber circle, 26,750nm output optical fibre, 27,750nm focus on output coupling mirror, 28,750nm Outgoing mirror, 29,1500nm periodically poled lithium niobate laser crystal, 30, parametric oscillation input mirror, 31,1064nm Parametric oscillation basic frequency laser crystal, 32,3-stage optical fiber input mirror, 33, three wavelength parameter bonders, 34, 3-stage optical fiber bonder, 35,750nm periodically poled lithium niobate laser parameter oscillating tank chamber, 36, three grades of light Fine outfan, 37, three wavelength parameter coupling transmission optical fibers, 38,892nm four-wave mixing periodically poled lithium niobate Laserresonator, 39, three wavelength input mirrors, 40,892nm four-wave mixing periodically poled lithium niobate laser crystal, 41,892nm outgoing mirror, 42,892nm focus on output coupling mirror, 43,892nm output optical fibre, 44,892nm Laser exports, and 45,750nm output optical fibre, 46,750nm splitting optical fiber circle, 47,3-stage optical fiber structure, 48, 750nm frequency-doubling crystal.

Detailed description of the invention:

892nm four-wave mixing periodically poled lithium niobate laserresonator 38 is set, 750nm splitting optical fiber is set Circle 46, is arranged, and arranges flashlight 892nm, ideler frequency light 750nm, pump light I 1064nm and pump light II 660nm There is the structure of the periodically poled lithium niobate laserresonator 38 of four-wave mixing, in the 892nm four-wave mixing cycle Poled lithium niobate laserresonator 38 outfan arranges 892nm and focuses on output coupling mirror 42 coupling access 892nm Output optical fibre 43, arranges 750nm splitting optical fiber circle 46, beam splitting at 750nm laser output optical fibre 26 rear One road 750nm laser output, ideler frequency light 750nm, pump light I 1064nm and pump light II 660nm and source Before three wavelength parameter coupling transmission optical fibers 37, three wavelength parameter coupling transmission optical fibers 37, three wavelength are set Parameter bonder 33, by 1064nm output optical fibre 13,660nm output optical fibre 19 and 750nm output optical fibre 26 couplings access three wavelength parameter bonders 33, arrange the vibration of 750nm periodically poled lithium niobate laser parameter humorous Shake chamber 35, the 750nm periodically poled lithium niobate laser parameter oscillating tank chamber 35 750nm by its outfan Focusing on output coupling mirror 27 to be linked in 750nm output optical fibre 26,750nm periodically poled lithium niobate laser is joined The input in amount 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 47；Flashlight 892nm is set The structure of the periodically poled lithium niobate laserresonator 38 of four-wave mixing, sets gradually three ripples from its input Long input mirror 39,892nm four-wave mixing periodically poled lithium niobate laser crystal 40,892nm outgoing mirror 41, 892nm focuses on output coupling mirror 42, and 892nm focuses on output coupling mirror 42 coupling and accesses 892nm output optical fibre 43.Arranging 660nm frequency multiplication resonator cavity 24,660nm frequency multiplication resonator cavity 24 is gathered by the 660nm of its outfan Burnt output coupling mirror 18 is linked in 660nm output optical fibre 19, and 660nm frequency multiplication resonator cavity 24 is defeated by it The secondary light fibre bonder 17 entering end is connected on secondary light fibre outfan 16, and secondary light fibre outfan 16 is from three Draw on the secondary light fibre circle 15 of level optical fiber structure 47；1064nm resonator cavity 14,1064nm resonance are set The outfan in chamber 14 focuses on output coupling mirror 12 by 1064nm and is linked in 1064nm output optical fibre 13, 1064nm resonator cavity 14 is connected on one-level fiber-optic output 7 by the one-level fiber coupler 8 of its input, One-level fiber-optic output 7 is drawn by the one-level fiber turns 6 of 3-stage optical fiber structure 47；750nm cycle pole is set Change Lithium metaniobate laser parameter oscillating tank chamber 35, set gradually from its input: 3-stage optical fiber input mirror 32, 1064nm parametric oscillation basic frequency laser crystal 31, parametric oscillation input mirror 30, the period polarized niobic acid of 1500nm Lithium laser crystal 29,1500nm outgoing mirror 28,750nm frequency-doubling crystal 48, the 750nm of outfan focus on coupling Close outgoing mirror 27, thus constitute 750nm periodically poled lithium niobate laser parameter oscillating tank chamber 35；Arrange 660nm frequency multiplication resonator cavity 24, sets gradually from its input: two grades of input mirrors 23,1319nm fundamental frequencies swash Luminescent crystal 22,660nm frequency-doubling crystal 20,660nm outgoing mirror 21 couple defeated with the 660nm of outfan focusing Appearance 18, thus constitutes 660nm frequency multiplication resonator cavity 24；1064nm resonator cavity 14 is set, from its input Rise and set gradually: one-level input mirror 9,1064nm laser crystal 10,1064nm outgoing mirror 11 and outfan 1064nm focus on output coupling mirror 12, thus constitute 1064nm resonator cavity 14,3-stage optical fiber structure is set 47,3-stage optical fiber structure 47 is connected one by one-level fiber turns 6, secondary light fibre circle 15 with 3-stage optical fiber circle 25 Body forms, and one-level fiber turns 6 is connected on semiconductor module 2 by 808nm pumping coupler 4, partly leads Module 2 is powered by semiconductor module block power supply 5, and above-mentioned whole optical elements are all arranged on optical rail and light On facility 1, optical rail and light facility 1 arrange fan 3, totally constitutes 892nm, 750nm double wave Long optical fibers output laser structure.

Work process:

Semiconductor module block power supply 5 supplies electricity to semiconductor module 2 and powers, and semiconductor module 2 is launched 808nm and swashed Light is coupled into one-level fiber turns 6 through 808nm pumping coupler 4, hence into 3-stage optical fiber structure 47 Secondary light fibre circle 15 and 3-stage optical fiber circle 25,808nm laser obtains gain in 3-stage optical fiber structure 47, Drawing 3-stage optical fiber outfan 36 from by 3-stage optical fiber circle 25, input 808nm laser enters the 750nm cycle Poled lithium niobate laser parameter oscillating tank chamber 35, humorous through the vibration of 750nm periodically poled lithium niobate laser parameter Shake chamber 35 1064nm parametric oscillation basic frequency laser crystal 31 generate 1064nm laser go pump optical to join Amount vibration generates 1500nm laser, exports 750nm laser through 750nm frequency-doubling crystal 48 frequency multiplication, through 750nm Focus on output coupling mirror 27 to be coupled in 750nm output optical fibre 26, by its input 750nm laser to three ripples In long parameter bonder 33；Draw secondary light fibre outfan 16 from by secondary light fibre circle 15, input 808nm Laser enters 660nm frequency multiplication resonator cavity 24, brilliant through the 1319nm basic frequency laser of 660nm frequency multiplication resonator cavity 24 Body 22 generates 1064nm fundamental frequency and occurs frequency multiplication to export 660nm laser, through 660nm through 660nm frequency multiplication resonator cavity 24 Focus on output coupling mirror 18 to be coupled in 660nm output optical fibre 19, by its input 660nm laser to three ripples In long parameter bonder 33；Drawing one-level fiber-optic output 7 from by one-level fiber turns 6, input 808nm swashs Light enters 1064nm resonator cavity 14, and 1064nm resonator cavity 14 generates 1064nm basic frequency laser, through 1064nm Focus on output coupling mirror 12 to be coupled in 1064nm output optical fibre 13, by its input 1064nm laser to three In wavelength parameter bonder 33；Thus, 750nm laser, 1064nm laser and 660nm laser are through three wavelength Parameter bonder 33 is coupled into 892nm four-wave mixing periodically poled lithium niobate laserresonator 38, flashlight Four-wave mixing effect is there is in 892nm, ideler frequency light 750nm, pump light I 1064nm with pump light II 660nm, Making flashlight 892nm generation, gain, flashlight 892nm focuses on output coupling mirror 42 and 892nm through 892nm Output optical fibre 43 exports 892nm laser output 44, arranges 750nm at 750nm laser output optical fibre 27 rear Splitting optical fiber circle 46, beam splitting one road 750nm laser exports.

Claims (2)

1. medical 892nm, 750nm dual-wavelength optical-fiber output laser, is characterized by, at 750nm Laser output optical fibre rear arranges 750nm splitting optical fiber circle, and beam splitting one road 750nm laser exports, and arranges letter Four-wave mixing is there is in number light 892nm, ideler frequency light 750nm, pump light I 1064nm with pump light II 660nm The structure of periodically poled lithium niobate laserresonator, four-wave mixing generates the output of 892nm optical-fiber laser, constitutes 892nm, 750nm dual-wavelength optical-fiber output laser structure.

One the most according to claim 1 medical 892nm, 750nm dual-wavelength optical-fiber output laser, It is characterized by, 750nm splitting optical fiber circle, beam splitting one road 750nm laser exports, flashlight 892nm, ideler frequency Light 750nm, pump light I 1064nm enter the period polarized niobic acid of 892nm four-wave mixing with pump light II 660nm , there is four-wave mixing effect in lithium laserresonator, generates flashlight 892nm laser and export, formation 892nm, 750nm dual-wavelength optical-fiber laser exports.