Iyo minda yekushandisa yeacousto-optic modulators (AOM Modulator)

Iyo minda yekushandisa yeacousto-optic modulators (AOM Modulator)

Nheyo yeAcousto-optic modulator:

An acousto-optic modulator(AOM Modulator) inowanzo umbwa neacousto-optic crystals, transducers, absorption devices uye vatyairi. Iyo modulated chiratidzo inobuda kubva kumutyairi inobata pane transducer muchimiro chechiratidzo chemagetsi uye yozoshandurwa kuita ultrasonic wave inosiyana muchimiro chechiratidzo chemagetsi. Kana iyo ultrasonic wave ichipfuura nepakati acousto-optic svikiro, inokonzeresa kudzvanya kwenzvimbo uye kurebesa kwepakati, ichigadzira elastic dhiri. Iyi dhizaini inochinja nguva nenguva nenguva nenzvimbo, zvichiita kuti yepakati iratidze inotsinhanisa density phenomenon, yakafanana nechikamu chegure. Kana mwenje uchipfuura nepakati peiyi svikiro yakakanganiswa nemafungu e ultrasonic, diffraction phenomenon inoitika. Ichi chiitiko chinonzi acousto-optic effect. Pasi pekuita kwezwi uye chiedza, mutakuri wemaziso anogadziriswa uye inova modulated wave iyo "inotakura" ruzivo.

Iwo makuru mashandisirwo eacousto-optic modulators:

Ruzha uye chiedza Q Switch (AOQS)

Iyo acoutooptic Q-switching switch (AOQS) inoshanda mukati meiyo laser cavity uye inoshingaira kugadziridzwa.

Iyo Q kukosha mumhango inoshandiswa kugadzira pulsed lasers ine mapfupi pulses uye yakakwirira peak simba. AOQS inowanzo shandiswa kuenzanisa kurasikirwa kwe0-odha danda. Kana redhiyo frequency driver yeAOQS ikabatidzwa, iyo 0-odha mwenje, nekuda kwekukanganisa, inodzivirira iyo laser iri mugomba kubva mukudonha, ichiwedzera kurasika kwegomba uye kuvharira kubuda kwelaser. Kana mutyairi weredhiyo akadzimwa kwenguva pfupi, iyo yakaunganidzwa yemagetsi emagetsi mu laser cavity inoburitswa muchimiro chepulses, nekudaro ichigadzira pulsed laser. Iyi nzira inogona kudzokororwa pamwero unopfuura 100KHz. Kana AOQS ichishanda mudunhu reBragg, pane chete danda rekusiyanisa. mu

Kune akawanda diffraction matanda kana uchishanda muRaman - Niss state.

2. Acousto-optic Modulator/Switch (AOM Modulator)

Acousto-optic modulators (AOM) anowanzo shandiswa kunze kwe laser cavity kushandura kusimba kwechiitiko laser (amplitude modulation AM). Izvi zvinogona kunge zviri nyore ON/OFF modulation yekukurumidza kushandura kana kuchinjika nhanho modulation kuti uwane kusimba modulation. Iyo modulation modhi inotarwa nerudzi rweRF mutyairi uye inogona kuve yedhijitari (pa/kudzima) kana analog (sine, square wave, linear, random…). Kazhinji kutaura, iyo RF drive yeAOM inotora yakatemwa frequency. Iyo yakakosha parameter yeAOM Modulatorndiyo nguva yekusimuka / yekudonha, iyo inotsanangura iyo inogoneka "kumhanya" kana amplitude modulation bandwidth yemodulation. Iyo yekusimuka / yekudonha nguva yakaenzana nedhayamita yedanda mukati me modulator. Naizvozvo, kuti uwane kukurumidza kukwira nguva, dhayamita yechiitiko laser beam inofanira kudzorwa. AOM inogona kushandiswa sevhavha (cycling on and off at a set frequency) and also as a variable attenuator (dynamically controling the intensity of the transmitted light). Laser modulation inowanikwa nekudzora redhiyo frequency kukonzeresa masaisai muacousto-optic crystal.

3. Acousto-optic deflector (AODF)

Iyo acoutooptic deflector (AODF) inogona kuwana inonakidza danda kuongorora nekushandura redhiyo frequency drive frequency. Nzvimbo yekuongorora inogona kuve isina kurongeka chinzvimbo, inoenderera mitsara yekutarisa uye inoteedzana poindi deflection. Zvichienderana nekristaro, wavelength uye saizi yedanda, nguva yekupindura ye0.05 kusvika 15 microseconds uye chaiyo chinzvimbo chekutonga kwenRad inogona kuwanikwa.

4. Acousto-optic frequency Shifter (AOFS)

Mushure mekupfuura nepakati pese acousto-optic zvishandiso, iyo diffraction inobuda danda relaser beam inoburitsa frequency shift. Iyo acousto-optic frequency shifter (AOFS) ndeye compact mudziyo wakanyatsogadzirirwa kuwana frequency kuchinja. Zvichienderana nemakona ezviitiko zvakasiyana akasarudzwa, iyo AOFS inoshandura frequency kumusoro kana kudzika neiyo frequency yeredhiyo inoshandiswa siginecha, uye maviri kana anopfuura maturusi anogona kuvharwa kuti awane sum kana mutsauko frequency musanganiswa. Zvigadzirwa zveAOFS zvinotora zvakagadzirirwa acoustic absorber angles, izvo zvinogona kuderedza kutaridzika kwezwi uye kuwedzera kushanda kweAOFS.

5. Acousto-optic Adjustable Sefa (AOTF)

Iyo acousto-optic tunable sefa (AOTF) yakasimba-nyika, yakatariswa nemagetsi uye inongowanikwa isina kurongeka optical passband sefa. Inogona kushandiswa kukurumidza uye zvine simba kusarudza chaiyo wavelengths kubva Broadband kana akawanda-mutsara masosi. Diffraction inoitika kana mamiriro ekufananidza asangana pakati peacoustic matanda. Naizvozvo, zvinogoneka kudzora nemagetsi mafirita paramita (senge wavelength, kudzika kwemodulation, uye kunyange bandwidth), nekudaro ichipa nekukurumidza (kazhinji mamicroseconds), ane simba, uye asina kujairika kuwana kune yekuona kusefa.