He aha ka modulator acousto-optic AOM modulator

He aha ka modulator acousto-opticMea hoʻololi AOM

ʻO ka modulation Acousto-optic kahi ʻenehana modulation waho. Ma keʻano laulā, ʻo ka mea acousto-optic e kāohi ana i ka loli o ka ikaika o ke kukuna laser ua kapa ʻia hemea hoʻololi ʻike maka-acousto(AOM modulator). Hana ka hōʻailona modulated ma ka transducer electroacoustic ma ke ʻano o kahi hōʻailona uila (amplitude modulation), a laila hoʻololi ʻia i loko o kahi kahua ultrasonic e loli ana ma ke ʻano o kahi hōʻailona uila. Ke hele nā ​​​​hawewe māmā ma o ka acousto-optic medium, ma muli o ka hopena acousto-optic, ua modulated ka mea lawe optical a lilo i nalu modulated intensity e "lawe" i ka ʻike.

Kumu hana

Hoʻololi Acousto-opticHe hana kino ia e hoʻohana ana i ka hopena acousto-optic e hoʻouka i ka ʻike ma luna o kahi mea lawe alapine optical. Hana ka hōʻailona modulated ma ka transducer electroacoustic ma ke ʻano o kahi hōʻailona uila (amplitude modulation), a laila hoʻololi ʻia i loko o kahi kahua ultrasonic e loli ana ma ke ʻano o kahi hōʻailona uila. Ke hele nā ​​​​hawewe māmā ma o ka acousto-optic medium, ma muli o ka hopena acousto-optic, ua modulated ka mea lawe optical a lilo i nalu modulated ikaika e "lawe" i ka ʻike.

ʻO ka modulator acousto-optic (AOM modulator) he mea maʻamau i haku ʻia me nā kristal acousto-optic, nā transducers, nā mea hoʻomoʻi a me nā mea hoʻokele. Hana ka hōʻailona modulated mai ka mea hoʻokele ma ka transducer ma ke ʻano o kahi hōʻailona uila a laila hoʻololi ʻia i nalu ultrasonic e loli ana ma ke ʻano o kahi hōʻailona uila. Ke hele ka nalu ultrasonic ma o ka acousto-optic medium, hana ia i ka compression kūloko a me ka elongation o ka medium, e hana ana i ke kaumaha elastic. Hoʻololi pinepine kēia kaumaha me ka manawa a me ka hakahaka, e hōʻike ana i ka medium i kahi hanana density alternating, e like me ka grating phase. Ke hele ka mālamalama ma o kēia medium i hoʻopilikia ʻia e nā nalu ultrasonic, hana ʻia kahi hanana diffraction. Ua kapa ʻia kēia hanana ʻo ka hopena acousto-optic. Ma lalo o ka hopena o ke kani a me ke kukui, ua modulated ka mea lawe optical a lilo i nalu modulated e "lawe" i ka ʻike.

E wehewehe pōkole i nā palena nui

Ka pono o ka diffraction a me ka nalowale o ka modulation

2. Bragg Angle: Ke hoʻokomo ʻia ke kukui i loko o kahihāmeʻa acousto-opticma kahi Bragg Angle, hiki ke hoʻokō ʻia ka pono diffraction maikaʻi loa. E hōʻemi nā hewa angular i ka pono.

3. Hoʻololi ʻana i ke kihi Divergence

4. Ka wikiwiki o ka modulation: Ua wehewehe ʻia ka manawa hoʻololi optical e ka manawa hoʻouna o ka nalu kani ma o ka pūhaka beam i loko o ke kristal A0.

5. Mana RF maikaʻi loa (Mana Hoʻopiha)