A. Fikradda ah ee loo yaqaan 'ultrafiast'
Ultrafiast lessers badanaa waxay tixraacaan lasers-ka-leser-qufulka ah ee loo yaqaan 'lesit-qufulka' loo adeegsado dib-u-soo-kicinta 'ultra-gaaban', tusaale ahaan, luqunta femtosecond ama muddada picosecond. Magac sax ah oo sax ah ayaa noqon kara laser garaacis gull ah. Lasers ultrashort pulse waa ku dhawaad lasers-quful-quful, laakiin saamaynta beddelka ayaa waliba soo saari kara tuurrada iibka ah.
B. Nooca loo yaqaan 'ultrafiast laser'
1. TI-Sapphire Lasers, sida caadiga ah habka lerge lens-qufulka, ayaa soo saari kara guntin sida ugu gaaban 5ta FS muddada. Iskucelceliskooda wax soo saarka ee celcelis ahaan waa dhowr boqol oo milliwatts, oo leh heerar ku celcelis garaaca wadnaha, oo dhaha, 80mhz iyo tobanaanshaha wadnaha ee tobanka, taasoo dhalisay awood sare oo aad u sarreeya. Laakiin letitanium-saffurire waxay u baahan yihiin iftiin ka soo baxaan ka soo baxaan qaar ka mid ah lass-ka-cagaarka-cagaaran, oo ka dhigaya mid ka sii adag oo qaali ah.
2. Waxaa jira lassers-ka diod -fied-kala duwan oo ku saleysan, tusaale ahaan, ytterbium-gopled (crystal ama galaas ama quraarad ah) ama chromium-ka-lasers-ka, oo badanaa u adeegsada qaab-qubka fadhiga. In kasta oo muddada garaaca wadnaha-diode-loosocday ma aha sidii muddada garaaca wadnaha ee wadnaha-Sapphire lasersers waxay dabooli karaan gobol ballaadhan oo ku saabsan muddada wareegga wadnaha, heerka ku celcelinta garaaca wadnaha, iyo awooda celceliska (hoos ka fiiri).
3. Way ka xadidan yihiin less-ka badan marka loo eego awooda celceliska, gaar ahaan awooda ugu sarreeya, laakiin si ku habboon ayaa loogu dari karaa fiber ophifers. Maqaalka ku saabsan qaab-qufulka-qufulka fiber ee qufulan wuxuu bixiyaa faahfaahin dheeraad ah.
(4) Qaabka loo xidho diode-qufulka qufulka ah wuxuu noqon karaa aalado muhiim ah ama daloolka dibada, oo uu noqon karo mid firfircoon, qaab dhismeedka ama isku dhafan. Caadi ahaan, qaab-qumman oo qufulan ah ayaa ku shaqeeya meel sare (dhowr kun oo megahertz) heerka ku celcelinta garaaca wadnaha ee tamarta garaaca wadnaha dhexdhexaadka ah.
Ultrafillars laser oser waxay noqon kartaa qayb ka mid ah nidaamyada 'ultrafifiast', oo sidoo kale ku jiri kara comiye comic-ka-oltrafif (sida optic optic optic optics) si loo kordhiyo awoodda sare iyo awoodda wax soo saarka.
Waqtiga Post: Jun-20-2023