Kufotokozera mwachidule kwamphamvu yamphamvu ya semiconductor laser development part one

Chidule cha mphamvu zazikululaser semiconductorchitukuko part one

Pamene magwiridwe antchito ndi mphamvu zikupitilira kukula, ma diode a laser (laser diodes driver) idzapitirizabe kusintha njira zamakono zamakono, motero kusintha momwe zinthu zimapangidwira ndikupangitsa kuti zinthu zatsopano zitheke. Kumvetsetsa zakusintha kwakukulu kwa ma laser amphamvu kwambiri a semiconductor ndikochepa. Kusintha kwa ma elekitironi kukhala ma lasers kudzera pa semiconductors kudawonetsedwa koyamba mu 1962, ndipo kupita patsogolo kosiyanasiyana kwatsatira komwe kwachititsa kupita patsogolo kwakukulu pakusinthidwa kwa ma elekitironi kukhala ma laser opangira kwambiri. Kupita patsogolo kumeneku kwathandizira ntchito zofunika kuchokera ku yosungirako kuwala kupita ku intaneti ya optical kupita kumadera osiyanasiyana a mafakitale.

Kuyang'ana kwa kupita patsogolo kumeneku komanso kuchulukirachulukira kwawo kukuwonetsa kuthekera kokulirapo komanso kufalikira m'magawo ambiri azachuma. M'malo mwake, ndikusintha kosalekeza kwa ma laser a semiconductor amphamvu kwambiri, gawo lake logwiritsira ntchito lidzafulumizitsa kukula, ndipo lidzakhudza kwambiri kukula kwachuma.

Chithunzi 1: Kuyerekeza kwa kuwala ndi lamulo la Moore la ma lasers amphamvu kwambiri a semiconductor

Diode-pumped solid-state lasers ndifiber lasers

Kupita patsogolo kwa ma laser a semiconductor amphamvu kwambiri kwadzetsanso chitukuko cha ukadaulo wa laser otsika, pomwe ma semiconductor lasers amagwiritsidwa ntchito kusangalatsa (pampu) makhiristo opangidwa ndi doped (diode-pumped solid-state lasers) kapena ulusi wa doped (fiber lasers).

Ngakhale ma semiconductor lasers amapereka mphamvu ya laser yogwira mtima, yaying'ono, komanso yotsika mtengo, amakhalanso ndi zofooka ziwiri zazikulu: sasunga mphamvu ndipo kuwala kwawo kuli kochepa. Kwenikweni, ntchito zambiri zimafuna ma laser awiri othandiza; Chimodzi chimagwiritsidwa ntchito kutembenuza magetsi kukhala laser emission, ndipo china chimagwiritsidwa ntchito kuti chiwongolere kutulutsa.

Diode-pumped solid-state lasers.
Chakumapeto kwa zaka za m'ma 1980, kugwiritsa ntchito ma semiconductor lasers kupopera ma laser olimba aboma kunayamba kukhala ndi chidwi chachikulu pazamalonda. Ma diode-pumped solid-state lasers (DPSSL) amachepetsa kwambiri kukula ndi zovuta zamakina owongolera matenthedwe (makamaka ma cycle coolers) ndikupeza ma module, omwe m'mbiri yakale amagwiritsa ntchito nyali za arc kupopera makristasi a laser olimba.

Kutalika kwa laser ya semiconductor kumasankhidwa kutengera kuphatikizika kwa mawonekedwe a mayamwidwe owoneka bwino ndi njira yopezera laser yolimba, yomwe imatha kuchepetsa kuchuluka kwamafuta poyerekeza ndi mawonekedwe amtundu wa arc arc. Poganizira kutchuka kwa neodymium-doped lasers emit 1064nm wavelength, 808nm semiconductor laser yakhala chinthu chopanga kwambiri pakupanga laser semiconductor kwazaka zopitilira 20.

Kuchita bwino kwa kupopa kwa diode kwa m'badwo wachiwiri kunatheka chifukwa cha kuwala kowonjezereka kwa ma lasers a semiconductor amitundu yambiri komanso kuthekera kokhazikika kwa mizere yaying'ono yotulutsa mpweya pogwiritsa ntchito ma bragg gratings (VBGS) pakati pa zaka za m'ma 2000. Mawonekedwe ofooka komanso ocheperako a mayamwidwe ozungulira 880nm adzutsa chidwi chachikulu pamapampu owoneka bwino owoneka bwino. Ma lasers apamwambawa amathandizira kupopera neodymium molunjika pamtunda wapamwamba wa 4F3 / 2, kuchepetsa kuchepa kwachulukidwe ndipo potero kumapangitsa kutulutsa kwamachitidwe oyambira pamagetsi apamwamba kwambiri, omwe akanakhala ochepa ndi magalasi otentha.

Pofika kumayambiriro kwa zaka khumi zachiwiri za m'zaka za zana lino, tinali kuchitira umboni kuwonjezeka kwakukulu kwa magetsi amtundu umodzi wa 1064nm lasers, komanso ma lasers awo osinthika pafupipafupi omwe akugwira ntchito mu mawonekedwe owoneka ndi ultraviolet wavelengths. Poganizira za nthawi yayitali yamphamvu yamphamvu ya Nd: YAG ndi Nd: YVO4, ma DPSSL Q-switching ma operations amapereka mphamvu zothamanga kwambiri komanso mphamvu yapamwamba kwambiri, zomwe zimawapangitsa kukhala abwino kwambiri pokonza zinthu komanso kugwiritsa ntchito makina olondola kwambiri.