Kenyelletso e khuts'oane ea lasermodutharathekenoloji
Laser ke leqhubu le phahameng la maqhubu a motlakase, ka lebaka la momahano oa eona o motle, joalo ka maqhubu a tloaelehileng a motlakase (joalo ka ha a sebelisoa seea-le-moeeng le thelevisheneng), joalo ka leqhubu le tsamaisang tlhahisoleseling. Mokhoa oa ho kenya tlhahisoleseling holim'a laser o bitsoa modulation, 'me sesebelisoa se etsang sena se bitsoa modulator. Ts'ebetsong ena, laser e sebetsa joalo ka sejari, ha lets'oao la maqhubu a tlase le fetisang tlhahisoleseling le bitsoa lets'oao le fetotsoeng.
Laser modulation hangata e arotsoe ka hare ho modulation le kantle modulation litsela tse peli. Ho feto-fetoha ha ka hare: ho bolela ho feto-fetoha ha mokhoa oa laser oscillation, ke hore, ka ho fetola lets'oao ho fetola liparamente tsa oscillation tsa laser, ka hona li ama litšobotsi tsa tlhahiso ea laser. Ho na le mekhoa e 'meli ea ho feto-fetoha ha ka hare: 1. Laola ka ho toba matla a ho pompa a laser ho lokisa matla a tlhahiso ea laser. Ka ho sebelisa lets'oao ho laola phepelo ea matla a laser, matla a tlhahiso ea laser a ka laoloa ke lets'oao. 2. Likarolo tsa ho feto-fetoha li behiloe ka har'a resonator, 'me litšobotsi tsa' mele tsa likarolo tsena tsa modulation li laoloa ke letšoao, ebe li-parameter tsa resonator li fetoloa ho finyella modulation ea laser output. Monyetla oa ho feto-fetoha ha ka hare ke hore ho sebetsa hantle ha modulation ho phahame, empa bothata ke hore hobane modulator e teng ka har'a cavity, e tla eketsa tahlehelo ka har'a cavity, e fokotsa matla a tlhahiso, 'me bandwidth ea modulator e tla boela e be teng. e fokotsoang ke phasejete ea sehlaseli. Modulation ea kantle: e bolela hore kamora ho theoa ha laser, modulator e beoa tseleng ea optical kantle ho laser, mme litšobotsi tsa 'mele tsa modulator li fetoloa ka lets'oao le fetotsoeng, mme ha laser e feta modulator, paramente e itseng. ea leqhubu la khanya e tla fetoloa. Melemo ea ho feto-fetoha ha ka ntle ke hore matla a hlahisoang ke laser ha a amehe 'me bandwidth ea molaoli ha e felle feela ke passband ea resonator. Bobebe ke bokhoni bo tlase ba ho feto-fetoha ha molumo.
Laser modulation e ka aroloa ka amplitude modulation, frequency modulation, phase modulation le intensity modulation ho latela thepa ea eona ea modulation. 1, amplitude modulation: amplitude modulation ke oscillation hore amplitude ea mojari e fetoha le molao oa lets'oao le fetotsoeng. 2, frequency modulation: ho fetola lets'oao ho fetola maqhubu a laser oscillation. 3, modulation ea mohato: ho fetola lets'oao ho fetola karolo ea laser oscillation laser.
Electro-optical intensity modulator
Molao-motheo oa electro-optic intensity modulation ke ho lemoha ho feto-fetoha ha matla ho latela molao-motheo oa tšitiso ea leseli la polarized ka ho sebelisa phello ea electro-optic ea kristale. Phello ea electro-optical ea kristale e bua ka ketsahalo ea hore index ea refractive ea kristale e fetoha tlas'a ketso ea tšimo ea motlakase e ka ntle, e leng se etsang hore ho be le phapang ea karolo pakeng tsa leseli le fetang ka kristale ka litsela tse fapaneng tsa polarization, e le hore polarization. boemo ba lebone boa fetoha.
Electro-optic phase modulator
Electro-optical phase modulation molao-motheo: karolo ea Angle ea laser oscillation e fetoloa ke molao oa ho fetola lets'oao.
Ntle le mokhoa oa ho feto-fetoha ha motlakase o kaholimo ho matla le motlakase oa motlakase, ho na le mefuta e mengata ea li-laser tse kang transverse electro-optic modulator, electro-optic wave wave modulator, Kerr electro-optic modulator, acousto-optic modulator. , magnetooptic modulator, modulator ea tšitiso le sebaka sa khanya ea sebaka.
Nako ea poso: Aug-26-2024