Khetho ea mohloli o nepahetseng oa laser: Edge emission semiconductor laser Karolo ea Pele

Khetho e nepahetsengmohloli oa laser: laser emission semiconductor laser
1. Selelekela
Laser ea semiconductorlichifi li arotsoe ka bohale emitting laser chips (EEL) le paatse cavity surface emitting laser chips (VCSEL) ho ea ka mekhoa e fapaneng ea tlhahiso ea li-resonators, 'me liphapang tsa bona tse khethehileng tsa sebopeho li bontšoa ho Figure 1. nts'etsopele ea theknoloji ea laser ea semiconductor e hōlile haholoanyane, e na le mefuta e mengata ea maqhubu, e phahamengelectro-opticalkatleho ea ho sokoloha, matla a maholo le melemo e meng, e loketseng haholo bakeng sa ts'ebetso ea laser, puisano ea optical le masimo a mang. Hajoale, li-laser tsa semiconductor ke karolo ea bohlokoa indastering ea li-optoelectronics, 'me likopo tsa tsona li akarelletse indasteri, likhokahano tsa mehala, mahlale, bareki, sesole le sefofane. Ka nts'etsopele le tsoelo-pele ea theknoloji, matla, ts'epahalo le ts'ebetso ea phetolo ea matla ea li-laser tsa semiconductor tse tsoang moeling li ntlafalitsoe haholo, 'me litebello tsa ts'ebeliso ea tsona li pharalletse le ho feta.
Ka mor'a moo, ke tla u lebisa ho ananela le ho feta khahleho e ikhethang ea side-emittinglisebelisoa tsa laser tsa semiconductor.

Setšoantšo sa 1 (ka ho le letšehali) lehlakoreng le leng le le leng le hlahisang semiconductor laser le (ka ho le letona) setšoantšo sa sebopeho sa laser se emeng se otlolohileng.

2. Molao-motheo oa ho sebetsa oa semiconductor ea bohalelaser
Sebopeho sa laser ea semiconductor se ka aroloa ka likarolo tse tharo tse latelang: sebaka se sebetsang sa semiconductor, mohloli oa pompo le resonator ea optical. Ho fapana le li-resonator tsa vertical cavity surface-emitting lasers (tse entsoeng ka liipone tsa Bragg tse ka holimo le tse ka tlaase), li-resonator tse lisebelisoa tsa laser tsa semiconductor tse hlahisoang haholo li entsoe ka lifilimi tsa optical mahlakoreng ka bobeli. Sebopeho se tloaelehileng sa mochine oa EEL le sebopeho sa resonator se bontšoa ho Setšoantšo sa 2. Photon e ka har'a sesebelisoa sa laser semiconductor semiconductor e matlafatsoa ke khetho ea mokhoa ho resonator, 'me laser e thehoa ka tsela e ts'oanang le sebaka sa substrate. Lisebelisoa tsa laser tsa Edge-emitting semiconductor li na le mefuta e mengata e fapaneng ea maqhubu a ts'ebetso 'me li loketse lits'ebetso tse ngata tse sebetsang, kahoo li fetoha o mong oa mehloli e nepahetseng ea laser.

Li-index tsa tlhahlobo ea ts'ebetso ea li-lasers tsa semiconductor tse nang le moeli li boetse li lumellana le li-laseser tse ling tsa semiconductor, ho kenyeletsa: (1) laser lasing wavelength; (2) Threshold current Ith, ke hore, hona joale moo laser diode e qalang ho hlahisa laser oscillation; (3) Iop ea hona joale e sebetsang, ke hore, hona joale ho khanna ha laser diode e fihla ho matla a hlahisoang, parameter ena e sebelisoa ho moralo le ho feto-fetoha ha potoloho ea laser drive; (4) Ho sebetsa hantle ha matsoapo; (5) Phapang e otlolohileng θ⊥; (6) Karohano e Ekaletseng Angle θ∥; (7) Hlokomela Im ea hajoale, ke hore, boholo ba hajoale ba semiconductor laser chip ho matla a hlahisoang a lekantsoeng.

3. Tsoelopele ea liphuputso tsa li-GaAs le GaN based edge emitting semiconductor lasers
Laser ea semiconductor e thehiloeng ho thepa ea semiconductor ea GaAs ke e 'ngoe ea litheknoloji tse holileng ka ho fetesisa tsa semiconductor laser. Hajoale, GAAS-based near-infrared band (760-1060 nm) li-laser tsa semiconductor tse ntšang moeli li sebelisitsoe haholo khoebong. E le thepa ea semiconductor ea moloko oa boraro ka mor'a Si le GaAs, GaN e 'nile ea ameha haholo lipatlisisong tsa saense le indasteri ka lebaka la thepa ea eona e babatsehang ea' mele le ea lik'hemik'hale. Ka nts'etsopele ea lisebelisoa tsa optoelectronic tse thehiloeng ho GAN le boiteko ba bafuputsi, li-diode tse hlahisang leseli tse thehiloeng ho GAN le li-laser tse ntšang moeli li entsoe indasteri.