Maitiro ekushandisa acousto optic modulator sechinochinja optical

Maitiro ekushandisa acousto optic modulator (AOM modulator) sechinochinja optical
1. Nhoroondo uye mamiriro ekuvandudzwa kwetekinoroji
1.1 Kwakatangira Laser: Muna 1960, Theodore Meiman akagadzira laser yekutanga inoshanda yeruby, ichiratidza kutanga kwetekinoroji yelaser.
1.2 Kugadzirwa kweLaser: Mushure mezvo, mhando dzakasiyana dzema laser dzakabuda, dzakadai sema gas lasers (senge helium neon lasers), semiconductor laser, uye solid-state lasers (senge YAG lasers), dzichiwedzera zvishoma nezvishoma nzvimbo yadzo yekushandisa mumabasa emauto, maindasitiri, uye ekurapa.
1.3 Kutangisa kwezvinodiwa zvepakati: Laser inoda simba rakagadzikana rinobuda, uye muzvishandiso zvakawanda, laser haigone kuramba ichivhenekera chinangwa. Kuti laser pachayo isachinjwa kakawanda, switch yekunze inoiswa kuti itonge zvakanaka iyo laser inobatidzwa/inodzimwa.

2. Nheyo yekushanda kwe acousto optic modulator (AOM modulator)
AOM chishandiso che optical chinoshandisa acousto-optic effect, apo mafungu eruzha anopararira kuburikidza ne medium kuti agadzire periodic refractive index changes, nokudaro achichinja hunhu hwemafungu echiedza anopfuura nepakati, akadai se intensity, frequency, uye direction. Parizvino, chinangwa chiri pa diffraction modes mbiri:
1.1 Bragg diffraction: Chinonyanya kuzivikanwa ndechekuti mafungu echiedza neruzha zvinoumba kona chaiyo, uye simba re diffraction rinonyanya kuunganidzwa muchiedza chekutanga, zvakafanana ne stereo grating. Iyi modhi inonyanya kushandiswa pakushandisa optical switch.
1.2 Raman diffraction: Nzira yekupararira kwechiedza nemafungu eruzha yakatwasuka, uye chiedza chakapatsanurwa chinoratidza kupararira kwakafanana nematanho akawanda, zvakafanana ne planar grating.
3. Maitiro ekushanda eAOM modulator sechinongedzo chemaziso
3.1 AOM haitore chiratidzo (hachishande): Laser inopfuura zvakananga nepakati (0-level light) uye inonyudzwa negirazi rinoratidza chiedza riri munzira ye optical, pasina kubuda kunoshanda.
3.2 Chiratidzo chekurodha cheAOM (chinoshanda): diffraction inogadzirwa, uye chiedza chekutanga chinoburitswa nekona yakati uye chinopinda munzira inotevera yekutarisa kuti ishandiswe.
Nekudzora kana AOM modulator ichitakura masaini, kukurumidza kuchinja uye modulation yelaser zvinogona kuitwa, zvichizadzisa mamiriro ekushandisa anoda kudzora nguva yekupiswa nelaser.
Pamusoro pekushandiswa sechinongedzo che optical, AOM inogonawo kushandisa mazinga ayo maviri echiedza kugadzira kupindirana uye kugadzira masaini e optical beat, ayo anogona kushandiswa mukuyera nedzimwe nzvimbo. Kudiwa kwesimba re laser rakagadzikana kwakakonzera tekinoroji ye optical switch, uye acousto optic modulators (AOM modulator) zvakavakirwa panheyo uye mashandisirwo e optical switch function uchishandisa acousto-optic effects, kunyanya Bragg diffraction mode.