"Mtima" wa laser: gain medium

"Mtima" wa laser: gainmedium
In ukadaulo wa laser,laser gainmedium(yomwe imadziwikanso kuti active medium kapena laser working substance) ndiye gawo lalikulu lalaser. Imakwaniritsa kusintha kwa tinthu tating'onoting'ono kudzera mu kupompa, imapereka kuthekera kokulitsa kuwala, imathandizira kutayika kwa resonant cavity, motero imapanga coherent laser output. Popanda gain medium yoyenera, sipangakhale laser yogwira ntchito bwino.
1. Lingaliro loyambira ndi mfundo yogwirira ntchito ya zopezera phindu.
Ntchito ya gain media ndikukulitsa mphamvu ya kuwala kudzera mu mpweya wotulutsa mpweya. Kawirikawiri, kupopa kwakunja (kupopa kwa kuwala kapena kupopa kwamagetsi) kumafunika kuti pakhale mphamvu kuti tinthu tating'onoting'ono tapamwamba tisinthe mphamvu.
2. Zofunikira pakupanga zinthu zabwino kwambiri:
Si zipangizo zonse zomwe zingagwiritsidwe ntchito ngati cholumikizira chopezera mphamvu. Zofunikira zazikulu: Kusintha kwa laser: Pali gawo lamphamvu lotulutsa mpweya (o_em) mu gawo la wavelength lomwe likufunidwa. Kuwonekera bwino: Zinthu zomwe zili m'nyumbamo zimaonekera bwino ku mafunde a laser ndi pampu. Kuyamwa bwino kwa pampu: Kugwirizana ndi gwero la pampu lomwe likupezeka (monga 808 nm LD pumping Nd:YAG) ndikoyenera moyo wonse wapamwamba (T): Moyo wautali ndi wopindulitsa pa Q-switching, moyo waufupi ndi wopindulitsa pakusintha. Kuchita bwino kwambiri kwa quantum: Kuzimitsa pang'ono, kuyamwa pang'ono. Chogulitsa cha o·T chapamwamba: Kukwaniritsa kuchuluka kwakukulu ndi malire otsika. Wide gain bandwidth: Yopindulitsa pakusintha kwa wavelength ndi ma pulse afupifupi. Kapangidwe ka kutentha ndi makina: Kuyendetsa bwino kutentha, thermo-optic coefficient yotsika, malire okwera kuwonongeka. Zina: Kukhazikika kwa mankhwala, kusakhala ndi hygroscopicity, malire okwera kuwonongeka. Zofunikira izi nthawi zambiri zimatsutsana. Mwachitsanzo, bandwidth yayikulu nthawi zambiri imatanthauza gawo lotsika, ndipo izi zimafuna kusinthana pazochitika zogwiritsira ntchito.
Njira yopezera phindu ndiyo chinthu chofunikira kwambiri pamagwiridwe antchito a laserKuchokera ku Nd:YAG yakale mpaka ulusi wamakono wamphamvu kwambiri, kupita patsogolo kwa zinthu kwakhala kukukulitsa kugwiritsa ntchito ma lasers. Pakupanga kothandiza, nthawi zambiri kumafunika ma simulation a manambala kuti akonze kuchuluka kwa doping, ma pumping schemes, ndi zina zotero.