Nts'etsopele le boemo ba 'maraka ba laser e ka sebelisoang (Karolo ea bobeli)
Molao-motheo oa ho sebetsa oalaser e sebetsang
Ho na le melao-motheo e ka bang tharo ea ho fihlela tokiso ea laser wavelength. Bohololi-laser tse bonolosebelisa lintho tse sebetsang tse nang le mela e mengata ea fluorescent. Li-resonator tse etsang laser li na le tahlehelo e tlase haholo ka holim'a leqhubu le moqotetsane haholo. Ka hona, ea pele ke ho fetola bolelele ba leqhubu la laser ka ho fetola bophahamo ba maqhubu bo tsamaellanang le sebaka se tlase sa tahlehelo ea resonator ka likarolo tse ling (tse kang grating). Ea bobeli ke ho fetola boemo ba matla ba phetoho ea laser ka ho fetola likarolo tse ling tsa kantle (tse kang matla a khoheli, mocheso, joalo-joalo). Ea boraro ke ts'ebeliso ea litlamorao tse se nang moeli ho fihlela phetoho le tokiso ea maqhubu (sheba li-nonlinear optics, ho hasana ha Raman, ho etsa habeli habeli, ho ts'oaroa ha parametric optical oscillation). Li-laseser tse tloaelehileng tsa mofuta oa pele oa tokiso ke lilaseser tsa dae, lilase tsa chrysoberyl, lilase tsa bohareng ba mebala, lilase tsa khase tse nang le khatello e phahameng le li-excimer laser tse tunable.
Laser ea tunable ho ea ka pono ea thekenoloji ea ho phethahatsa e arotsoe haholo-holo ka: thekenoloji ea hona joale ea taolo, theknoloji ea ho laola mocheso le theknoloji ea ho laola mechine.
Har'a bona, mahlale a taolo ea elektroniki ke ho fihlela tokiso ea wavelength ka ho fetola ente ea hona joale, ka lebelo la tokiso ea boemo ba NS, bandwidth e pharalletseng, empa matla a manyane a phallo, a ipapisitse le thekenoloji ea taolo ea elektroniki haholo SG-DBR (sampling grating DBR) le Laser ea GCSR (ts'ebetso e thusang ea grating e tsamaisanang le morao-sampling ea morao-rao) . Theknoloji ea taolo ea mocheso e fetola bolelele ba maqhubu a laser ka ho fetola index ea refractive ea sebaka se sebetsang sa laser. Theknoloji e bonolo, empa e lieha, 'me e ka fetoloa ka sekhahla se moqotetsane sa li-nm tse seng kae feela. Tse ka sehloohong tse thehiloeng ho thekenoloji ea ho laola mocheso keDFB laser(maikutlo a ajoang) le laser ea DBR (ponts'o ea Bragg e ajoang). Taolo ea mechine e itšetlehile haholo ka theknoloji ea MEMS (micro-electro-mechanical system) ho phethela khetho ea wavelength, e nang le bandwidth e kholo e feto-fetohang, matla a phahameng a tsoang. Mehaho e ka sehloohong e thehiloeng ho thekenoloji ea ho laola mechine ke DFB (maikutlo a ajoang), ECL (laser ea cavity ea ka ntle) le VCSEL (laser ea vertical cavity surface emitting). Lintlha tse latelang li hlalositsoe ho tsoa likarolong tsena tsa molao-motheo oa li-laser tsa tunable.
Sesebelisoa sa puisano sa Optical
Laser ea Tunable ke sesebelisoa sa bohlokoa sa optoelectronic molokong o mocha oa "dense wavelength division multiplexing system" le phapanyetsano ea photon ho marang-rang a marang-rang. Ts'ebeliso ea eona e eketsa haholo bokhoni, ho feto-fetoha ha maemo le scalability ea sistimi ea phetisetso ea fiber ea optical, mme e hlokometse tokiso e tsoelang pele kapa e tsoelang pele ka bongata bo boholo ba maqhubu.
Likhamphani le litsi tsa lipatlisiso lefats'eng ka bophara li khothalelitse lipatlisiso le nts'etsopele ea li-laser tse sebelisoang ka mafolofolo, 'me tsoelo-pele e ncha e lula e etsoa lefapheng lena. Ts'ebetso ea li-laser tsa tunable e lula e ntlafatsoa mme litšenyehelo li lula li fokotseha. Hajoale, li-laser tsa tunable li arotsoe haholo ka mekhahlelo e 'meli: li-laser tsa semiconductor tunable le li-laser tsa fiber tse tunable.
Laser ea semiconductorke mohloli oa bohlokoa oa leseli tsamaisong ea puisano ea optical, e nang le litšoaneleho tsa boholo bo bonyenyane, boima bo bobebe, ts'ebetso e phahameng ea ho fetola, ho boloka matla, joalo-joalo, 'me ho bonolo ho finyella bonngoe ba chip optoelectronic le lisebelisoa tse ling. E ka aroloa ka laser ea kabo e ajoang, e ajoang Bragg seipone laser, micromotor system vertical cavity surface emitting laser le kantle cavity semiconductor laser.
Ntlafatso ea laser fiber e ka sebelisoang e le mokhoa oa ho fumana chelete le nts'etsopele ea semiconductor laser diode joalo ka mohloli oa pompo e khothalelitse haholo nts'etsopele ea li-laser tsa fiber. Laser ea tunable e ipapisitse le bophahamo ba 80nm ba ho fumana fiber ea doped fiber, 'me karolo ea sesefa e eketsoa ho lupu ho laola leqhubu la lasing le ho hlokomela tokiso ea maqhubu.
Nts'etsopele ea laser semiconductor e sebetsang hantle haholo lefatšeng, 'me tsoelo-pele le eona e potlakile haholo. Ha li-laser tsa tunable li ntse li atamela butle-butle li-laser tse tsitsitseng tsa wavelength mabapi le litšenyehelo le ts'ebetso, ha ho pelaelo hore li tla sebelisoa le ho feta mekhoeng ea puisano le ho phetha karolo ea bohlokoa ho marang-rang a mahlo-mafubelu nakong e tlang.
Tebello ea ntlafatso
Ho na le mefuta e mengata ea li-lasers tse ka sebelisoang, tse atisang ho ntlafatsoa ka ho tsoela pele ho hlahisa mekhoa ea tokiso ea wavelength motheong oa li-lasers tse fapaneng tsa leqhubu le le leng, 'me lisebelisoa tse ling li rekisitsoe 'marakeng machabeng. Ntle le nts'etsopele ea li-laser tse tsoelang pele tsa optical tunable lasers, ho tlalehiloe li-laser tse nang le mesebetsi e meng e kopantsoeng, joalo ka laser ea tunable e kopantsoeng le chip e le 'ngoe ea VCSEL le modulator ea ho monya motlakase, le laser e kopantsoeng le sampole grating Bragg reflector. le semiconductor optical amplifier le modulator ea ho monya motlakase.
Hobane laser ea wavelength tunable e sebelisoa haholo, laser e fetolehang ea meaho e fapaneng e ka sebelisoa lits'ebetsong tse fapaneng, 'me e' ngoe le e 'ngoe e na le melemo le mathata. External cavity semiconductor laser e ka sebelisoa e le mohloli oa leseli o pharaletseng o ka sebelisoang lisebelisoa tsa tlhahlobo tse nepahetseng ka lebaka la matla a eona a phahameng a hlahisoang le bolelele bo tsoelang pele bo sa feleng. Ho latela pono ea ho kopanngoa ha photon le ho kopana le marang-rang a bokamoso bohle, sampole ea grating DBR, superstructured grating DBR le li-lasers tse kopantsoeng le li-modulator le liamplifiers e kanna ea ba tse ts'episang mehloli ea leseli e ka sebelisoang bakeng sa Z.
Fiber grating tunable laser e nang le sekoti sa kantle le eona ke mofuta o ts'episang oa mohloli oa leseli, o nang le sebopeho se bonolo, bophara ba mohala o moqotetsane le khokahanyo e bonolo ea fiber. Haeba modulator ea EA e ka kopanngoa ka sekoting, e ka boela ea sebelisoa e le mohloli o phahameng oa optical soliton optical. Ntle le moo, li-laser tsa fiber tse tsamaisoang tse thehiloeng ho fiber lasers li hatetse pele haholo lilemong tsa morao tjena. Ho ka lebelloa hore ts'ebetso ea li-laser tse sebelisoang mehloling ea leseli la optical e tla ntlafatsoa le ho feta, 'me karolo ea mmaraka e tla eketseha butle-butle, ka tebello e khanyang haholo ea ts'ebeliso.
Nako ea poso: Oct-31-2023