Ubwoko bwa laser

Ubwoko bwalaser

Ikoreshwa rya lazeri irashobora kugabanywa mubisanzwe mubice bibiri byingenzi: kimwe nigihe umurongo umwe cyangwa imirongo myinshi ihamye-yumurambararo udashobora gutanga icyerekezo kimwe cyangwa byinshi byihariye byerekanwa; Ikindi cyiciro kirimo ibihe aholaseruburebure bwumurongo bugomba guhora bukurikiranwa mugihe cyibigeragezo cyangwa ibizamini, nka spekitroscopi hamwe nubushakashatsi bwa pompe.

Ubwoko bwinshi bwa lazeri irashobora kubyara umurongo uhoraho (CW), nanosekond, picosekond cyangwa femtosekond pulse isohoka. Ibisohoka biranga bigenwa na laser yunguka ikoreshwa. Ikintu cyibanze gisabwa kugirango uhindurwe neza ni uko zishobora gusohora lazeri hejuru yuburebure bwumurongo. Ibikoresho byihariye bya optique birashobora gukoreshwa muguhitamo uburebure bwumurongo cyangwa imirongo yumurambararo uhereye kumyuka yangiza yalazeri. Hano tuzabamenyesha laseri nyinshi zisanzwe zikoreshwa kuri wewe

Guhindura CW ihagaze laser laser

Mu buryo bwumvikana ,.CW laserni Byoroheje Byubatswe. Iyi lazeri ikubiyemo indorerwamo-yerekana cyane, inyungu igereranya hamwe nindorerwamo ihuza (reba Ishusho 1), kandi irashobora gutanga CW ibisohoka ukoresheje itangazamakuru ryunguka rya laser. Kugirango ugere kumurongo, inyungu yunguka ishobora gukwirakwiza intego yumurambararo igomba guhitamo.

2. Impinduka ya CW impeta

Impeta zimpeta zimaze igihe kinini zikoreshwa kugirango tugere kuri CW isohoka binyuze muburyo bumwe burebure, hamwe numuyoboro mugari wa kilohertz. Kimwe na lazeri ihagaze, ibyuma byerekana impeta birashobora kandi gukoresha amarangi na titanium safi nkuko byunguka itangazamakuru. Irangi rirashobora gutanga umurongo muto cyane ubugari buri munsi ya 100 kHz, mugihe titanium safi itanga ubugari bwumurongo uri munsi ya 30 kHz. Urwego rwo guhuza lazeri irangi ni 550 kugeza 760 nm, naho urwego rwa titanium safi ni 680 kugeza 1035 nm. Ibisubizo byubwoko bwombi bwa laseri birashobora gukuba inshuro ebyiri kuri UV band.

3. Uburyo bufunze uburyo bwa lazeri

Kuri porogaramu nyinshi, gusobanura neza ibihe biranga laser isohoka ni ngombwa kuruta gusobanura neza ingufu. Mubyukuri, kugera kubintu bigufi bya optique bisaba imiterere ya cavity hamwe nuburyo bwinshi burebure bwumvikana icyarimwe. Iyo ubu buryo bwa cyclic longitudinal moda ifite icyiciro gihamye mumyanya ya laser, laser izafungwa uburyo. Ibi bizafasha impiswi imwe kunyeganyega mu cyuho, hamwe nigihe cyacyo gisobanurwa nuburebure bwa laser cavit. Uburyo bukora-gufunga burashobora kugerwaho ukoresheje anmoderi ya acousto-optique(AOM), cyangwa uburyo bwo gufunga uburyo bworoshye burashobora kugerwaho binyuze mumurongo wa Kerr.

4. Ultrafast ytterbium laser

Nubwo lazeri ya titanium safiro ifite ibikorwa bifatika, ubushakashatsi bwibinyabuzima bwibinyabuzima busaba uburebure burebure. Ubusanzwe uburyo bubiri bwo gufata fotone bushimishwa na fotone ifite uburebure bwa 900 nm. Kuberako uburebure bwumurambararo busobanura gutatana, uburebure bwumurambararo muremure burashobora gutwara neza ubushakashatsi bwibinyabuzima busaba ubujyakuzimu bwimbitse.

Muri iki gihe, lazeri zishobora gukoreshwa mu bintu byinshi by'ingenzi, uhereye ku bushakashatsi bwa siyansi shingiro kugeza ku gukora inganda za lazeri n'ubuzima n'ubumenyi bw'ubuzima. Kugeza ubu urwego rwikoranabuhanga rurahari ni runini cyane, ruhereye kuri sisitemu yoroshye ya CW ishobora guhinduka, umurongo wawo muto urashobora gukoreshwa mugukemura cyane-spekitroscopi, gufata molekile na atome, hamwe nubushakashatsi bwa kwant optique, butanga amakuru yingenzi kubashakashatsi ba kijyambere. Abakora lazeri uyumunsi batanga igisubizo kimwe, batanga umusaruro wa laser urenga 300 nm murwego rwingufu za nanojoule. Sisitemu nyinshi zigoye zingana zingana na 200 kugeza 20.000 nm muri microjoule na milijoule.