Isakhiwo esiyinhloko se-laser yefayibha yemodi eyodwa

Isakhiwo esiyinhloko se-i-laser yefayibha yemodi eyodwa

Ukusebenza okuvelele kwemodi eyodwai-fiber laserkuvela ekwakhiweni kwesakhiwo sangaphakathi okunembile. Ukusebenza ngokubambisana okuphumelelayo phakathi kwazo zonke izingxenye kuyisisekelo sokufeza umkhiqizo we-laser ozinzile nosezingeni eliphezulu.

Isibonelo, i-laser engu-976nm enekhono eliphezulu lokuguqulwa kwe-electro-optical isetshenziswa ukushaja i-fibre ehlanganisiwe, bese kusetshenziswa isibani sembewu esingu-1064nm esinekhwalithi enhle yokukhanya ukuqondisa i-fibre ehlanganisiwe ehlanganisiwe ukukhulula i-laser engu-1064nm enamandla aphezulu. Uma amandla e-laser angu-1064nm adingekayo ephezulu, kulapho kudingeka khona amandla amaningi kanye nenani lomthombo wephampu.

Incazelo eningiliziwe yezingxenye ezibalulekile

Umthombo wephampu ungumthombo wamandla we-i-laser, ngokuvamilei-laser ye-semiconductori-diode, lapho ubude bokukhanya kwayo buhambisana ne-absorption peak ye-gain medium (isibonelo, i-ytterbium-doped fiber ihambelana ne-wavelength engu-915nm noma i-976nm). I-laser yemodi eyodwa idinga ukuthi umthombo wokukhanya wephampu nawo ube nokubumbana okuphezulu kwendawo. Ngakho-ke, ama-laser diode ahlanganiswe nefayibha yemodi eyodwa avame ukusetshenziswa ukuqinisekisa ukuthi ukukhanya kwephampu kungafakwa kahle enkabeni yefayibha yemodi eyodwa.

2. Imicu ye-Gain iyindlela eyinhloko yokukhiqiza i-laser futhi imvamisa imicu yengilazi ye-quartz ehlanganiswe nezinto ezingavamile zomhlaba. Ama-ion avamile ahlanganisiwe afaka i-ytterbium (Yb³⁺), i-erbium (Er³⁺), i-thulium (Tm³⁺), njll., ahambisana nama-band ahlukene we-output wavelength (njenge-1064nm, 1550nm, 2μm, njll.). Ubude be-gain fiber budinga ukwakheka ngokunembile ukuqinisekisa ukumuncwa okugcwele kokukhanya kwephampu ngenkathi kugcinwa ukuguqulwa kwe-opto-optical okusebenza kahle kakhulu.

3. Uhlobo oluvame kakhulu lokusetshenziswa kwe-resonant cavity yi-fiber Bragg grating pair. I-grating yakhiwa ngokudalula imicu ye-optical kuma-fringe okuphazamiseka kwe-laser ye-ultraviolet, okubangela ushintsho oluhlala njalo ku-refractive index yezifunda zayo eziyinhloko. Ngokulawula isikhathi nobude be-grating, ubude be-wavelength kanye ne-bandwidth yokubonakaliswa kwayo kungalawulwa ngokunembile. Lesi sakhiwo se-resonant cavity esine-fiber egcwele asidingi izingxenye ezihlukene ezifana nama-lens optical, okuthuthukisa kakhulu ukuzinza kanye nekhono lokulwa nokuphazamiseka kwesistimu.

4. Uhlelo lokukhipha i-beam collimation luvame ukutholakala ngemuva kwe-output end grating. Umsebenzi walo ukuguqula i-divergent laser ekhishwa ku-optical fiber ibe ukukhanya okuhlanganisiwe noma ukuyigxilisa endaweni yokusebenza. Lolu hlelo luvame ukufaka amalensi azigxilisa wona noma amaqembu amalensi amancane futhi lusebenzisa isakhiwo esinembile somshini ukuqinisekisa ukunemba kokuqondanisa. Umklamo we-optical osezingeni eliphezulu unganciphisa ngempumelelo ukuphazamiseka futhi uqinisekise ukuthi i-output beam igcina ukusatshalaliswa okuhle kakhulu kwe-Gaussian.