Ma lasers apamwamba kwambiri ali ndi ntchito zofunika pakufufuza kwasayansi ndi magawo amakampani ankhondo monga kukonza kwa laser ndi kuyeza kwamagetsi. Laser yoyamba padziko lapansi idabadwa m'ma 1960. Mu 1962, McClung adagwiritsa ntchito cell ya nitrobenzene Kerr kuti akwaniritse kusungirako mphamvu ndikumasulidwa mwachangu, motero kuti apeze laser yopumira yokhala ndi mphamvu yayikulu kwambiri. Kutuluka kwaukadaulo wa Q-switching ndichinthu chofunikira kwambiri m'mbiri yachitukuko champhamvu champhamvu cha laser. Mwanjira iyi, mphamvu ya laser yopitilira kapena yotakata imakanikizidwa kukhala ma pulse okhala ndi nthawi yopapatiza kwambiri. Mphamvu yapamwamba ya laser imachulukitsidwa ndi maulamuliro angapo a ukulu. Ukadaulo wa electro-optic Q-switching uli ndi maubwino akusintha kwakanthawi kochepa, kutulutsa kwamphamvu kwamphamvu, kulumikizana bwino, komanso kutayika kwapang'onopang'ono. Mphamvu yapamwamba ya laser linanena bungwe mosavuta kufika mazana a megawatts.

Electro-optic Q-switching ndiukadaulo wofunikira wopeza ma pulse m'lifupi komanso ma laser amphamvu kwambiri. Mfundo yake ndikugwiritsa ntchito electro-optic zotsatira za makhiristo kuti akwaniritse kusintha kwadzidzidzi pakutha kwa mphamvu ya laser resonator, potero kuwongolera kusungirako ndikutulutsa mwachangu mphamvu mumtsempha kapena pakatikati pa laser. Mphamvu ya electro-optical ya kristalo imatanthawuza zochitika zakuthupi zomwe chiwerengero cha refractive cha kuwala mu kristalo chimasintha ndi mphamvu ya magetsi ogwiritsidwa ntchito a kristalo. Chochitika chomwe chiwongolero cha refractive index ndi mphamvu ya malo ogwiritsira ntchito magetsi amakhala ndi mgwirizano wozungulira amatchedwa linear electro-optics, kapena Pockels Effect. Chodabwitsa kuti refractive index index ndi sikweya ya mphamvu yamagetsi yomwe imagwiritsidwa ntchito imakhala ndi ubale wamzere umatchedwa secondary electro-optic effect kapena Kerr Effect.

Nthawi zonse, mawonekedwe a electro-optic a kristalo ndi ofunika kwambiri kuposa zotsatira zachiwiri za electro-optic. Linear electro-optic effect imagwiritsidwa ntchito kwambiri muukadaulo wa electro-optic Q-switching. Imapezeka m'makristasi onse a 20 okhala ndi magulu osagwirizana ndi centrosymmetric point. Koma monga zinthu zabwino zama electro-optic, makhiristowa samangofunika kuti akhale ndi mawonekedwe owoneka bwino amagetsi, komanso mawonekedwe oyenera opatsira kuwala, malo owonongeka a laser, komanso kukhazikika kwa physicochemical properties, kutentha kwabwino, kumasuka kwa processing, komanso ngati kristalo imodzi yokhala ndi kukula kwakukulu ndi khalidwe lapamwamba ingapezeke. Nthawi zambiri, makina osinthira a electro-optic Q-switching amafunikira kuyesedwa kuchokera kuzinthu izi: (1) mphamvu yamagetsi yamagetsi; (2) laser kuwonongeka pakhomo; (3) kuwala kufala osiyanasiyana; (4) resistivity magetsi; (5) dielectric nthawi zonse; (6) thupi ndi mankhwala katundu; (7) luso. Ndi chitukuko cha kugwiritsa ntchito komanso kupita patsogolo kwaukadaulo kwa kugunda kwachidule, kubwereza pafupipafupi, komanso makina a laser amphamvu kwambiri, zofunikira za magwiridwe antchito a Q-switching makhiristo zikupitilira kukula.

Kumayambiriro kwa chitukuko chaukadaulo wa electro-optic Q-switching, makhiristo omwe amagwiritsidwa ntchito anali lithiamu niobate (LN) ndi potassium di-deuterium phosphate (DKDP). LN crystal ili ndi gawo lochepa la kuwonongeka kwa laser ndipo imagwiritsidwa ntchito makamaka pama lasers otsika kapena apakatikati. Nthawi yomweyo, chifukwa chakumbuyo kwaukadaulo wokonzekera kristalo, mawonekedwe owoneka bwino a LN crystal akhala osakhazikika kwa nthawi yayitali, omwe amachepetsanso kugwiritsa ntchito kwake kwakukulu mu lasers. DKDP crystal ndi deuterated phosphoric acid potaziyamu dihydrogen (KDP) kristalo. Ili ndi malire owonongeka kwambiri ndipo imagwiritsidwa ntchito kwambiri pamakina a electro-optic Q-switching laser. Komabe, kristalo ya DKDP imakonda kusokoneza ndipo imakhala ndi nthawi yayitali yakukula, zomwe zimalepheretsa kugwiritsidwa ntchito kwake pamlingo wina. Rubidium titanyl oxyphosphate (RTP) crystal, barium metaborate (β-BBO) crystal, lanthanum gallium silicate (LGS) crystal, lithium tantalate (LT) crystal ndi potaziyamu titanyl phosphate (KTP) crystal amagwiritsidwanso ntchito mu electro-optic Q-switching laser. machitidwe.

 Maselo apamwamba a DKDP Pockels opangidwa ndi WISOPTIC (@1064nm, 694nm)