ʻO nā noi ʻoi loa i ka optics i alakaʻi ʻia e nā modulators optical

ʻO nā noi ʻoi loa i ka optics i alakaʻi ʻia e nā modulators optical

ʻO ke kumumanaʻo omodulation ʻike makaʻaʻole paʻakikī. Hoʻokō nui ia i ka modulation o ka amplitude, phase, polarization, refractive index, absorption rate a me nā ʻano ʻē aʻe o ka mālamalama ma o nā stimuli waho, e kāohi pololei i ka hōʻailona optical, e like me ka hiki ʻana i nā photons ke lawe a hoʻouna i ka ʻike. ʻO nā ʻāpana kumu o kahi maʻamaumea hoʻololi uila-opticʻekolu ʻāpana: nā kristal electro-optic, nā electrodes, a me nā mea optical. I ke kaʻina hana o ka modulation kukui, hoʻololi ka mea i loko o ka modulator optical i kāna refractive index, ka helu absorption a me nā waiwai ʻē aʻe ma lalo o ka mana o nā stimuli waho (e like me nā kahua uila, nā kahua kani, nā loli thermal a i ʻole nā ​​​​​​ikaika mechanical), no laila e hoʻopilikia ana i ke ʻano o nā photons i ko lākou hele ʻana ma o ka mea, e like me ka kaohi ʻana i nā ʻano hoʻolaha o ka mālamalama (amplitude, phase, polarization, etc.). ʻO ke kristal electro-optical ke kikowaena o kamea hoʻololi ʻike maka, kuleana no ka pane ʻana i nā loli i ke kahua uila a me ka hoʻololi ʻana i kāna helu kuhikuhi refractive. Hoʻohana ʻia nā electrodes e hoʻopili i nā kahua uila, ʻoiai nā ʻāpana optical e like me nā polarizers a me nā waveplates e hoʻohana ʻia e alakaʻi a kālailai i nā photons e hele ana ma o ke kristal.

Nā noi palena ʻāina ma Optics

1. Ka hoʻolālā Holographic a me ka ʻenehana hōʻike

I ka projection holographic, ʻo ka hoʻohana ʻana i nā modulators optical spatial e hoʻololi pono i nā nalu kukui hiki ke hiki i nā nalu kukui ke hoʻopilikia a hoʻopuehu i kahi ala kikoʻī, e hana ana i kahi hoʻolaha kahua kukui paʻakikī. No ka laʻana, hiki i ka SLM e pili ana i ka kristal wai a i ʻole DMD ke hoʻololi ikaika i ka pane optical o kēlā me kēia pixel, hoʻololi i ka ʻike kiʻi a i ʻole ka hiʻohiʻona i ka manawa maoli, e ʻae ana i nā mea nānā e nānā i ka hopena ʻekolu-dimensional o ke kiʻi mai nā kihi like ʻole.

2. Kahua mālama ʻikepili Optical

Hoʻohana ka ʻenehana mālama ʻikepili optical i nā ʻano alapine kiʻekiʻe a me ka ikehu kiʻekiʻe o ke kukui e hoʻopili a wehe i ka ʻike ma o ka modulation kukui pololei. Hilinaʻi kēia ʻenehana i ka kaohi pololei o nā nalu kukui, me ka hoʻoponopono ʻana o ka amplitude, phase a me ke kūlana polarization, e mālama i ka ʻikepili ma nā media e like me nā disc optical a i ʻole nā ​​​​mea mālama holographic. He kuleana koʻikoʻi nā modulators optical, ʻoi aku hoʻi nā modulators optical spatial, i ka ʻae ʻana i ka kaohi optical pololei loa ma luna o nā kaʻina mālama a me ka heluhelu ʻana.

Ma ke kahua optic, ua like nā photons me nā mea hula maikaʻi loa, e hula nani ana i ke "mele" o nā mea e like me nā kristal, nā kristal wai a me nā olonā optical. Hiki iā lākou ke hoʻololi nani i ke kuhikuhi, ka wikiwiki, a hiki ke hoʻokomo koke i nā "lole kala" like ʻole, e hoʻololi ana i kā lākou neʻe ʻana a me nā mele, a hōʻike i hoʻokahi hana kupaianaha ma hope o kekahi. ʻO kēia kaohi pololei o nā photons ke kī kilokilo i ka ʻoi loa o ka ʻenehana optical e hiki mai ana, e hoʻolilo ana i ka honua optical i piha i nā hiki palena ʻole.