Chiyambi cha Laser Yotulutsa Mphepete (EEL)

Chiyambi cha Laser Yotulutsa Mphepete (EEL)
Kuti mupeze mphamvu yayikulu yotulutsa laser ya semiconductor, ukadaulo wamakono ndikugwiritsa ntchito kapangidwe ka emission ya m'mphepete. Resonator ya laser ya semiconductor yotulutsa m'mphepete imapangidwa ndi malo achilengedwe olekanitsidwa a kristalo ya semiconductor, ndipo beam yotulutsa imatulutsidwa kuchokera kutsogolo kwa laser. Laser ya semiconductor yamtundu wa emission ya m'mphepete imatha kutulutsa mphamvu zambiri, koma malo ake otulutsa ndi ozungulira, khalidwe la beam ndi loipa, ndipo mawonekedwe a beam amafunika kusinthidwa ndi makina opangira beam.
Chithunzi chotsatirachi chikuwonetsa kapangidwe ka laser ya semiconductor yomwe imatuluka m'mphepete. Mng'alu wowala wa EEL uli wofanana ndi pamwamba pa chip ya semiconductor ndipo umatulutsa laser m'mphepete mwa chip ya semiconductor, yomwe imatha kutulutsa laser ndi mphamvu yayikulu, liwiro lalikulu komanso phokoso lotsika. Komabe, kutulutsa kwa laser kwa EEL nthawi zambiri kumakhala ndi gawo lopingasa la beam komanso kusiyana kwakukulu kwa angular, ndipo kugwira ntchito bwino ndi ulusi kapena zigawo zina za kuwala ndi kochepa.

Kuwonjezeka kwa mphamvu yotulutsa ya EEL kumachepetsedwa ndi kuchuluka kwa kutentha kwa zinyalala m'dera logwira ntchito komanso kuwonongeka kwa kuwala pamwamba pa semiconductor. Mwa kuwonjezera dera la waveguide kuti muchepetse kuchuluka kwa kutentha kwa zinyalala m'dera logwira ntchito kuti muwongolere kutentha, kuwonjezera dera lotulutsa kuwala kuti muchepetse kuchuluka kwa mphamvu yowunikira ya kuwala kuti mupewe kuwonongeka kwa kuwala, mphamvu yotulutsa mpaka ma milliwatts mazana angapo ikhoza kupezeka mu kapangidwe ka waveguide imodzi yodutsa.
Pa chitsogozo cha mafunde cha 100mm, laser imodzi yotulutsa m'mphepete imatha kupeza ma watts makumi ambiri a mphamvu yotulutsa, koma pakadali pano chitsogozo cha mafunde chimakhala ndi ma multi-mode ambiri pa chip, ndipo chiŵerengero cha ma beam otulutsa chimafikanso pa 100:1, zomwe zimafuna njira yovuta yopangira ma beam.
Poganizira kuti palibe chitukuko chatsopano mu ukadaulo wazinthu ndi ukadaulo wakukula kwa epitaxial, njira yayikulu yowonjezerera mphamvu yotulutsa ya chip imodzi ya semiconductor laser ndikuwonjezera m'lifupi mwa strip ya dera lowala la chip. Komabe, kuwonjezera m'lifupi mwa strip kwambiri ndikosavuta kupanga transverse high-order mode oscillation ndi filamentlike oscillation, zomwe zimachepetsa kwambiri kufanana kwa kuwala, ndipo mphamvu yotulutsa siikukwera mofanana ndi m'lifupi mwa strip, kotero mphamvu yotulutsa ya chip imodzi ndi yochepa kwambiri. Pofuna kukweza kwambiri mphamvu yotulutsa, ukadaulo wa array umayamba. Ukadaulowu umaphatikiza mayunitsi angapo a laser pa substrate yomweyo, kotero kuti gawo lililonse lotulutsa kuwala liziikidwa ngati gulu la magawo amodzi pang'onopang'ono, bola ngati ukadaulo wa optical isolation umagwiritsidwa ntchito kulekanitsa gawo lililonse lotulutsa kuwala mu gulu, kuti lisasokoneze wina ndi mnzake, ndikupanga multi-aperture lasing, mutha kuwonjezera mphamvu yotulutsa ya chip yonse powonjezera chiwerengero cha mayunitsi ophatikizana otulutsa kuwala. Chipu cha laser cha semiconductor ichi ndi chip cha semiconductor laser array (LDA), chomwe chimadziwikanso kuti semiconductor laser bar.