Ib qho optical beam expander (tseem hu ua collimator lossis up-collimator) yog ob, lossis ntau dua, lub ntsiab lus kho qhov muag uas hloov cov yam ntxwv sib txawv thiab qhov loj ntawm cov nqaj. Lawv coj ib lub teeb ntawm lub teeb thiab nthuav nws qhov loj. Lawv kuj tau siv los txo cov kab kab uas hla uas yuav pab tau thaum siv acousto- lossis electro-optic modulators. Lawv feem ntau yog siv rau hauv cov kab ke nrog txoj kab ntev ntev kom cov nqaj sib tsoo lossis sib txawv ntawm qhov chaw tsom qhov loj rau lub lens muab.
Lub laser beam expander ua hauj lwm nyob rau hauv xws li ib tug txoj kev uas lub input beam yog nthuav mus rau ib tug loj txoj kab uas hla. Cov ntsiab lus yog muab los ntawm cov hauv paus ntsiab lus ntawm kev tsim telescopic. Thaum ib tug collimated laser beam yog input rau ib sab ntawm lub beam expander, ib tug collimated beam yog output los ntawm qhov opposite kawg. Cov khoom qhov chaw thiab duab qhov chaw rays converge ntawm infinity. Cov yam ntxwv no txhais tau hais tias lub nqaj expander yog ib qho afocal system.
Muaj ob hom afocal beam expanders, muaj npe tom qab lawv cov keeb kwm ua ntej. Galilean beam expander muaj ib tug diverging lens thiab ib tug converging lens. Cov lo ntsiab muag raug cais los ntawm cov lej ntawm lawv cov ntsiab lus focal, tshwj tsis yog tias lub lens diverging muaj qhov tsis zoo focal ntev. Lub beam input rau hauv lub diverging lens propagates mus rau lub converging lens yam tsis tau mus txog ib tug nruab nrab focal point. Lub Keplerian beam expander muaj ob lub ntsiab lus sib txuas, sib cais los ntawm qhov sib npaug ntawm lawv qhov focal lengths. Ib txoj kab hluav taws xob sib txuas sib txuas mus rau qhov chaw focal ntawm ob lub lo ntsiab muag thiab tom qab ntawd diverges mus rau qhov tso zis lens.
Laser tshuab tau dhau los ua ib qho chaw hauv kev siv thoob plaws kev lag luam los ntawm kev kho mob mus rau kev ua cov ntaub ntawv. Beam nthuav dav lossis txo qis yog ib qho kev thov hauv ntau lub chaw sim siv lasers lossis lub teeb ci thiab optics. Lub laser beam expander feem ntau yog ib qho tseem ceeb hauv kev ua tiav ntawm tus kheej. Rau cov khoom siv hluav taws xob siab, qhov sib ntxiv ntawm cov kab hluav taws xob tuaj yeem muab kev tswj xyuas kom txo qis zog. Txo qhov sib txawv tuaj yeem pab ua kom haum thiab txo qhov chaw me me ntawm qhov kawg tsom rau ntawm kab teeb. Txo qhov sib txawv los tswj kev sib tsoo kuj tseem muaj txiaj ntsig rau kev thov laser siv, tshwj xeeb tshaj yog nyob rau hauv txoj kab ntev-ntev. Kev sib txawv ntawm laser beam expanders tej zaum yuav tsim nyog los them rau qhov txawv ntawm laser qhov chaw beam loj ntawm chav tsev mus rau chav tsev.
Ib tug ntau-prism beam expander yog ib tug tshwj xeeb beam magnification uas expands ib lub teeb beam tsis tsom nws thiab nrog rau cov kev xaiv ntxiv ntawm achromaticity. Ib tug ntau-prism beam expander feem ntau deploys ob mus rau tsib prisms kom yield loj, ib-dimensional beam expansion yam.