Iindidi ze-laser ezinokutya

Iintlobo zei-laser enokuqhutywa

Ukusetyenziswa kwe-laser eziguqulwayo zinokwahlulwa ngokubanzi zibe ziindidi ezimbini eziphambili: enye kuxa umgca omnye okanye i-laser ye-fixed-wavelength ye-laser ayinako ukubonelela nge-wavelength efunekayo enye okanye ngaphezulu; Olunye udidi lubandakanya iimeko apho ilaserUbude beavenge kufuneka bulungiswe ngokuqhubekayo ngexesha lovavanyo okanye uvavanyo, olufana ne-spectroscopy kunye neemvavanyo zokubona impompo.

Iindidi ezininzi zeelaser eziqhutywayo zinokuvelisa i-wave eqhubekayo eqhubekayo (CW), i-nanosecond, i-piccosecond okanye i-femtosecond pulse output. Iimpawu zayo zokuphuma zichongwa yi-laser gain medium esetyenziswayo. Imfuneko esisiseko yeelaser ezinokutya kukuba zinokukhupha iilaser kuluhlu olubanzi lwamaza. Amacandelo akhethekileyo okukhanya angasetyenziselwa ukukhetha ubude bobude obuthile okanye iibhendi zamaza obude ukusuka kwiibhanti zokukhuphaiilaser ezinokusebenziseka. Apha siza kukwazisa iilaser ezininzi eziqhelekileyo ezisetyenziswayo kuwe

I-tunable CW emile i-laser yamaza

Ngokwengqiqo, iI-laser yeCW ye-Tunablelolona yilo lulula lwelaser. Le laser ibandakanya isibuko esiphezulu, i-medium medium kunye ne-output coupling mirror (jonga i-Figure 1), kwaye inokubonelela ngemveliso ye-CW ngokusebenzisa imidiya eyahlukeneyo ye-laser. Ukufezekisa ukulinganisa, i-medium medium engakwazi ukugubungela uluhlu lwe-wavelength ekujoliswe kuyo kufuneka kukhethwe.

2. Tunable CW ring laser

Iilaser zeringi kudala zisetyenziselwa ukufikelela kwimveliso ye-CW enokutyibilika ngemowudi enye yobude, kunye ne-spectral bandwidth kuluhlu lwe-kilohertz. Ngokufana neelases zamaza ezimileyo, iilaser ring ezinokuthi zisebenzise idayi kunye ne-titanium sapphire njengemithombo yeendaba. Idayi zinokubonelela ngomgca omxinwa kakhulu ububanzi obungaphantsi kwe-100 kHz, ngelixa i-titanium sapphire inikezela ngomgca wobubanzi obungaphantsi kwe-30 kHz. Uluhlu lwe-laser yedayi yi-550 ukuya kwi-760 nm, kwaye i-titanium sapphire laser yi-680 ukuya kwi-1035 nm. Iziphumo zazo zombini iindidi zeelaser zinokuphinda-phindwe kabini kwibhendi ye-UV.

3. Imowudi itshixiwe quasi-continuous laser

Kwizicelo ezininzi, ukuchaza ngokuchanekileyo iimpawu zexesha lokuphuma kwelaser kubaluleke kakhulu kunokuchaza amandla ngokuchanekileyo. Ngapha koko, ukufezekisa iipulses ezimfutshane zokukhanya kufuna ulungelelwaniso lwecavity kunye neendlela ezininzi zelongitudinal ezijikelezayo ngaxeshanye. Xa ezi ndlela ze-cyclic longitudinal zine-fixed phase relationship ngaphakathi kwe-laser cavity, i-laser iya kuba yi-mode-locked. Oku kuya kwenza ukuba i-pulse enye iqhube ngaphakathi kwi-cavity, kunye nexesha layo elichazwe ngobude be-laser cavity. Ukutshixwa kwemowudi esebenzayo kunokufezekiswa ngokusebenzisa iimodyuli yeacousto-optic(I-AOM), okanye ukutshixa kwemowudi yokwenziwayo kunokubonwa ngelensi yeKerr.

4. Ultrafast ytterbium laser

Nangona iilaser ze-titanium sapphire zinokusebenza okubanzi, ezinye iimvavanyo ze-biological imaging zifuna ubude bamaza amade. Inkqubo eqhelekileyo yokufunxa iifotoni ezimbini ivuyiswa ziifotoni ezinobude obungamaza angama-900 nm. Kuba ubude bamaza amade buthetha ukusasazwa okuncinci, ubude bexesha elide bokuvuselela bunokuqhuba ngempumelelo imifuniselo yebhayoloji efuna ubunzulu bomfanekiso.

Kule mihla, iilaser eziguqulekayo ziye zasetyenziswa kwiinkalo ezininzi ezibalulekileyo, ukusuka kuphando olusisiseko lwezenzululwazi ukuya kwimveliso yelaser kunye nobomi kunye nesayensi yezempilo. Uluhlu lwetekhnoloji ekhoyo ngoku lubanzi kakhulu, luqala kwiinkqubo ezilula zokutyhuna ze-CW, ezinobubanzi obumxinwa obunokusetyenziselwa i-spectroscopy ene-high-resolution, i-molecular and atomic capture, kunye nemifuniselo ye-quantum optics, enika ulwazi oluphambili kubaphandi bale mihla. Abavelisi be-laser banamhlanje banikezela ngezisombululo zokumisa enye, ukubonelela ngemveliso ye-laser ehamba ngaphezu kwe-300 nm ngaphakathi koluhlu lwamandla e-nanojoule. Iinkqubo ezintsonkothileyo ngakumbi zithatha uluhlu olunomtsalane olubanzi lwe-spectral lwe-200 ukuya kwi-20,000 nm kwi-microjoule kunye ne-millijoule zamandla amanqanaba.