High ganiya ikon Laser da muhimmanci aikace-aikace a kimiyya bincike da soja filayen kamar Laser sarrafa da photoelectric auna. An haifi Laser na farko a duniya a cikin shekarun 1960. A cikin 1962, McClung ya yi amfani da nitrobenzene Kerr cell don cimma ma'ajin makamashi da saurin fitarwa, don haka ya sami Laser mai bugun jini tare da babban iko. Fitowar fasahar Q-switching shine muhimmin ci gaba a cikin tarihin ci gaban wutar lantarki mafi girma. Ta wannan hanyar, ci gaba ko faɗaɗa ƙarfin Laser bugun bugun jini yana matsawa cikin ɓangarorin ƙwanƙwasa tare da ƙanƙantar lokacin nisa. Ana ƙara ƙarfin kololuwar laser ta umarni da yawa na girma. Fasahar sauyawa ta lantarki-optic Q tana da fa'idodin gajeriyar lokacin sauyawa, ingantaccen fitarwar bugun jini, aiki tare mai kyau, da ƙarancin rashi. Ƙarfin wutar lantarki na Laser mai fitarwa zai iya kaiwa daruruwan megawatts cikin sauƙi.

Electro-optic Q-switching wata fasaha ce mai mahimmanci don samun kunkuntar bugun bugun jini da manyan lasers mai ƙarfi. Ka'idarsa ita ce amfani da tasirin electro-optic na lu'ulu'u don cimma sauye-sauye na gaggawa a cikin asarar makamashi na resonator na Laser, ta haka ne ke sarrafa ajiyar ajiya da saurin sakin makamashi a cikin rami ko matsakaicin Laser. Tasirin electro-optical na crystal yana nufin al'amari na zahiri wanda index refractive na haske a cikin crystal ya canza tare da ƙarfin filin lantarki da ake amfani da shi na crystal. Lamarin da ke canza fihirisar refractive da ƙarfin filin lantarki da ake amfani da shi yana da alaƙar linzamin kwamfuta ana kiransa linzamin lantarki-optics, ko Pockels Effect. Al'amarin da ke canza ma'anar refractive da murabba'in ƙarfin filin lantarki da aka yi amfani da shi yana da alaƙar linzamin kwamfuta ana kiransa tasirin electro-optic na biyu ko Kerr Effect.

A ƙarƙashin yanayi na al'ada, tasirin electro-optic na linzamin kristal yana da mahimmanci fiye da tasirin electro-optic na biyu. Ana amfani da tasirin lantarki na linzamin kwamfuta a ko'ina a cikin fasahar canza wutar lantarki ta Q. Ya wanzu a cikin dukkan lu'ulu'u 20 tare da ƙungiyoyin ma'ana marasa centrosymmetric. Amma a matsayin manufa electro-optic abu, wadannan lu'ulu'u ne ba kawai ake bukata don samun karin fili electro-optic sakamako, amma kuma dace haske watsa kewayon, high Laser lalacewa kofa, da kwanciyar hankali na physicochemical Properties, mai kyau zazzabi halaye, sauƙi na aiki. kuma ko ana iya samun kristal guda ɗaya tare da girman girma da inganci. Gabaɗaya magana, lu'ulu'u masu amfani da electro-optic Q-switching suna buƙatar ƙididdige su daga waɗannan abubuwan: (1) ingantaccen ma'aunin lantarki; (2) kofa na lalacewar laser; (3) kewayon watsa haske; (4) tsayayyar wutar lantarki; (5) Dielectric akai-akai; (6) kaddarorin jiki da sinadarai; (7) injina. Tare da haɓaka aikace-aikacen da ci gaban fasaha na ɗan gajeren bugun jini, babban maimaitawa, da tsarin laser mai ƙarfi, abubuwan da ake buƙata na lu'ulu'u na Q-switching suna ci gaba da ƙaruwa.

A farkon matakin haɓaka fasahar canza fasahar lantarki-optic Q, lu'ulu'u kawai da ake amfani da su a zahiri sune lithium niobate (LN) da potassium di-deuterium phosphate (DKDP). LN crystal yana da ƙarancin lalacewar Laser kuma ana amfani dashi galibi a cikin ƙananan wutan lantarki ko matsakaici. A lokaci guda, saboda baya na fasahar shirye-shiryen kristal, ingancin gani na LN crystal ya daɗe ba shi da ƙarfi, wanda kuma ya iyakance aikace-aikacensa mai fa'ida a cikin lasers. DKDP crystal ne deuterated phosphoric acid potassium dihydrogen (KDP) crystal. Yana da matsananciyar lalacewa kofa kuma ana amfani dashi ko'ina a cikin tsarin laser na Q-switching electro-optic. Duk da haka, DKDP crystal yana da haɗari ga rashin ƙarfi kuma yana da tsayin girma na girma, wanda ke iyakance aikace-aikacensa zuwa wani matsayi. Rubidium titanyl oxyphosphate (RTP) crystal, barium metaborate (β-BBO) crystal, lanthanum gallium silicate (LGS) crystal, lithium tantalate (LT) crystal da potassium titanyl phosphate (KTP) crystal ana amfani da su a electro-optic Q-switching Laser. tsarin.

 Tantanin halitta na DKDP Pockels mai inganci wanda WISOPTIC yayi (@1064nm, 694nm)