Yini i-laser ye-crygenic

Umqondo wama-lasers osebenza emazingeni okushisa aphansi awumusha: I-laser yesibili emlandweni kwakungu-Crygenic. Ekuqaleni, umqondo wawunzima ukufezekisa ukusebenza kwezinga lokushisa egumbini lokushisa, futhi umdlandla womsebenzi wokushisa ophansi waqala ngawo-1990 ngokuthuthukiswa kwama-lasers anamandla amakhulu kanye nama-amplifiers.

Emandleni aphezuluImithombo ye-Laser, imiphumela eshisayo efana nokulahleka kokudedela, i-lens ye-lens noma i-laser crystal egoba ingathinta ukusebenza kweUmthombo Okhanyayo. Ngokupholisa okushisa okuphansi, imiphumela eminingi eshisayo enobungozi ingacindezelwa ngempumelelo, okungukuthi, ukuthola usizo oluphakathi okuzokwehliswa ku-77k noma ngisho 4k. Umphumela wokupholisa ikakhulukazi ubandakanya:

Ukuvuswa kwesimo se-Get Medium kuvinjelwe kakhulu, ikakhulukazi ngoba indlela yamahhala yentambo iyanda. Ngenxa yalokho, i-gradient yokushisa yehla kakhulu. Isibonelo, lapho amazinga okushisa esehliswe kusuka ku-300k kuya ku-77k, ukuthuthuka okushisayo kwe-ag crystal kukhuphuka ngesici esiyisikhombisa.

I-caefflision eshisayo ye-Thermal iyehla kakhulu. Lokhu, kanye nokwehliswa kwe-izingalo lokushisa, kuphumela ekunciphiseni umphumela we-lensing welensing ye-thermal ngakho-ke lokho kunciphise amathuba okuxinaka kwengcindezi.

I-Thermo-Optical Coefflicry nayo incishisiwe, kuphinde kunciphise umphumela welensi we-thermal lens.

Ukwanda kwengxenye yesiphambano sokutholwa kweRare Earth Ion kubangelwa ukwehla okubangelwa ukwenziwa okubangelwa umphumela we-thermal. Ngakho-ke, amandla e-Saturmation ancishisiwe futhi inzuzo ye-laser iyanda. Ngakho-ke, amandla wephampu we-Phreshold ancishisiwe, futhi ama-pulses amafushane angatholakala lapho i-Q switch isebenza. Ngokwandisa ukudluliselwa kwesikhonkwane sokukhipha, ukusebenza kahle kwethambeka kungathuthukiswa, ngakho-ke umphumela wokulahleka kwe-parasitic we-cavity ubaluleke kakhulu.

Inombolo eyizinhlayiyana yamazinga aphansi aphansi we-quasi-ezintathu inzuzo ephakathi nendawo ephakathi iyancishiswa, ngakho-ke amandla okuposa asemuva ancishisiwe futhi ukusebenza kwamandla kwenziwa ngcono. Isibonelo, i-YB: i-yag, ekhiqiza ukukhanya ngo-1030nm, ingabonakala njengohlelo olusezingeni eliphakeme lokushisa egumbini lokushisa, kepha uhlelo lwezinga ezine ku-77k. I-ER: okufanayo kuyiqiniso nge-yag.

Ngokuya ngemali ephakathi, ubukhulu bezinqubo ezithile eziqothulayo buzoncishiswa.

Kuhlanganiswe nezinto ezingenhla, ukusebenza okuphansi kokushisa kungathuthukisa kakhulu ukusebenza kwe-laser. Ikakhulu, ama-lasers aphansi okupholisa amazinga okushisa angathola amandla aphezulu okuphuma ngaphandle kwemiphumela eshisayo, okungukuthi, ikhwalithi enhle ye-beam ingatholwa.

Indaba eyodwa okufanele icatshangelwe ukuthi ku-crystal ye-laser ye-crycoled, i-bandwidth yokukhanya okukhanyayo kanye nokukhanya okumisiwe kuyokwehliswa, ngakho-ke uhla lwe-wavenweth luzobe luncane, futhi ububanzi be-wavelength kanye nokuqina kwe-wavelength ye-laser egcwele. Kodwa-ke, lo mphumela uvame ukungavamile.

Ukupholisa kwe-Cryogenic kuvame ukusebenzisa okupholile, njenge-nitrogen ye-liquid noma i-helium ewuketshezi, futhi kahle esiqandisini sijikeleza ngeshubhu elinamathiselwe kwi-laser crystal. I-Coolant igcwaliswa ngesikhathi noma iphinde isebenze kabusha ku-loop evaliwe. Ukuze ugweme ukuqina, kuvame ukudingekile ukubeka i-laser crystal egumbini lokuphumula.

Umqondo wamakristalu e-laser asebenza emazingeni okushisa aphansi nawo angasebenza kuma-amplifiers. I-Titanium sapfire ingasetshenziswa ukwenza i-amplifier enhle ye-amplifier, amandla aphakathi nendawo kumashumi ama-Watts.

Yize amadivaysi okupholisa ama-cryogenic angacindezelaAmasistimu we-Laser, Izinhlelo ezijwayelekile zokupholisa zivame ukuba lula, kanye nokusebenza kahle kokupholisa kwe-cryogenic kuvumela ukuncishiswa okuthile kobunzima.