Indlela yokusebenzisa i-acousto optic modulator njengeswishi yokukhanya

Indlela yokusebenzisa i-acousto optic modulator (i-AOM modulator) njengeswishi yokukhanya
1. Isizinda kanye nomongo wentuthuko yezobuchwepheshe
1.1 Umsuka We-Laser: Ngo-1960, uTheodore Meiman wasungula i-laser yokuqala ye-ruby esebenzayo, ephawula ukuzalwa kobuchwepheshe be-laser.
1.2 Ukuthuthukiswa Kwe-Laser: Ngemva kwalokho, kwavela izinhlobo ezahlukene zama-laser, njenge-gas lasers (njenge-helium neon lasers), i-semiconductor laser, kanye ne-solid-state lasers (njenge-YAG lasers), kancane kancane zandisa ububanzi bazo bokusetshenziswa emikhakheni yezempi, yezimboni, neyezokwelapha.
1.3 Isingeniso semfuneko eyinhloko: I-laser idinga ukukhishwa kwamandla okuzinzile, futhi ezinhlotsheni eziningi, i-laser ayikwazi ukukhanyisa njalo ithagethi. Ukuze kugwenywe ukushintsha okuphindaphindiwe kwe-laser ngokwayo, kwethulwa iswishi yangaphandle yokukhanya ukuze ilawule ngokunembile ukuvula/ukuvala i-laser.

2. Isimiso sokusebenza se-acousto optic modulator (i-AOM modulator)
I-AOM iyithuluzi lokubona elisebenzisa umphumela we-acousto-optic, lapho amaza omsindo asakazeka khona ngokusebenzisa i-medium ukuze akhe izinguquko ze-refractive index ngezikhathi ezithile, ngaleyo ndlela aguqule izici zamaza okukhanya adlula ku-medium, njengokuqina, imvamisa, kanye nesiqondiso. Njengamanje, kugxilwe ezindleleni ezimbili zokusabalalisa:
1.1 I-Bragg diffraction: Okuvamile kakhulu ukuthi amaza okukhanya nomsindo akha i-engeli ethile, futhi amandla e-diffraction agxile kakhulu ekukhanyeni kwe-first-order, okufana ne-stereo grating. Le modi isetshenziswa kakhulu kwizinhlelo zokusebenza ze-optical switch.
1.2 Ukwehlukaniswa kwe-Raman: Indlela yokusabalala kwamaza okukhanya nomsindo iqonde ngqo, kanti ukukhanya okuhlukaniswe kubonisa ukusatshalaliswa okulinganayo kwezinga elihlukahlukene, okufana ne-planar grating.
3. Imodi yokusebenza ye-modulator ye-AOM njengeswishi yokukhanya
3.1 I-AOM ayilayishi isignali (ayisebenzi): I-laser idlula ngqo (ukukhanya okusezingeni eli-0) futhi imuncwa yisibuko sokukhanya endleleni yokukhanya, ngaphandle kokukhipha okusebenzayo.
3.2 Isignali yokulayisha ye-AOM (iyasebenza): kukhiqizwa i-diffraction, bese ukukhanya kwe-oda lokuqala kukhishwa nge-engeli ethile bese kungena endleleni elandelayo ye-optical ukuze isetshenziswe.
Ngokulawula ukuthi ngabe i-modulator ye-AOM ilayisha yini izimpawu, ukushintsha okusheshayo kanye nokuguqulwa kwe-laser kungafinyelelwa, kuhlangatshezwane nezimo zohlelo lokusebenza ezidinga ukulawula isikhathi sokukhanya kwe-laser.
Ngaphezu kokusetshenziswa njengeswishi yokukhanya, i-AOM ingasebenzisa futhi amazinga ayo amabili okukhanya ukukhiqiza ukuphazamiseka nokwakha amasignali okushaya okukhanya, angasetshenziswa ekulinganisweni nakweminye imikhakha. Isidingo esisebenzayo sokukhishwa kwamandla e-laser okuzinzile sibangele ubuchwepheshe bokushintsha okukhanya, futhi ama-modulators e-acousto optic (i-AOM modulator) asekelwe esimisweni nasekusetshenzisweni komsebenzi wokushintsha okukhanya kusetshenziswa imiphumela ye-acousto-optic, ikakhulukazi imodi yokusabalalisa ye-Bragg.