ʻO nā ʻano nui o nā lasers

ʻO ke kumu nuinā ʻano o nā lasers

ʻO ka hanauna onā lasersʻO ke kumumanaʻo o ka "radiation spontaneous and stimulated" i hāpai ʻia e Einstein i ka makahiki 1916 ke kumu kino o kēia au.ʻōnaehana laserʻO ka pilina ma waena o nā photons a me nā ʻātoma e hana i ʻekolu ʻano o nā kaʻina hana hoʻololi: ka hoʻoulu ʻia ʻana o ka absorption, ka hoʻokuʻu koke ʻana, a me ka hoʻoulu ʻia ʻana o ka hoʻokuʻu ʻana.

ʻO nā ʻano nui o nā lasers:

1. Kuhikuhi maikaʻi: ʻOiai ʻo ke kukuna kukui e pālahalaha ana ma ke axis o ka lua resonant hiki ke hana i ka oscillation a me ka hoʻonui mau ʻana, ʻo ka hopena laser mai ka laser he liʻiliʻi loa ka divergence Angle a me ke kuhikuhi maikaʻi loa, e lilo ia i kumu kukui like kūpono.

2. ʻĀlohilohi kiʻekiʻe: Ma muli o kona kuhikuhi maikaʻi loa, ua hoʻopaʻa nui ʻia ka ikehu laser ma ka lewa, no laila e hiki ai iā ia ke loaʻa ka ikaika kiʻekiʻe loa. ʻO ka mālamalama maʻamau o ka lā ma kahi o 100W/cm². ʻO ka ikaika o ke kukui o kahi laser helium-neon me ka mana o kekahi mau milliwatts hiki ke lilo i mau haneli manawa ʻoi aku ka kiʻekiʻe ma mua o ka lā. ʻO kahi laser e hana ana i loko o kahi pulsed

hiki i ke ʻano ke loaʻa ka ikaika o ka mālamalama he 107 a 1014 mau manawa kiʻekiʻe ma mua o ka lā.

3. Monochromaticity maikaʻi: Ma muli o ka ʻoiaʻiʻo o nā photons i hana ʻia e ka radiation i hoʻoulu ʻia he alapine like a ua kaupalena ʻia e ka lua resonant, ʻo ka mālamalama wale nō o kahi nalu paʻa e hiki ke oscillate a hoʻopuka ʻia. No laila, he monochromaticity maikaʻi loa nā lasers.

4. Kūlike maikaʻi: ʻO ke kukui maʻamau i hana ʻia e ka radiation spontaneous he kukui incoherent, ʻoiai ʻo nā ʻano o ke kukui i hoʻopuka ʻia e ka radiation stimulated e hana i nā lasers i ka coherence maikaʻi. Hāʻawi kēia mau ʻano nui ʻehā i nā ʻano hana diagnostic hou a me nā ʻenehana ʻike kiʻi no ka lāʻau lapaʻau a me ka biology.

ʻO nā pōʻino o nā lasers a me nā hana palekana

Hiki ke hoʻokaʻawale ʻia ka pōʻino hiki ke hana ʻia e nā lasers i ke kino o ke kanaka i ʻelua mau ʻano. ʻO kekahi ʻano he pōʻino pololei, ʻo ia hoʻi, ʻo ka hoʻomālamalama ʻana o nā lasers ma mua o ka paepae palekana e hōʻino ai i nā maka, ka ʻili, ka ʻōnaehana nerve a me nā ʻōpū o loko. ʻO kekahi ʻano ʻē aʻe nā pōʻino pololei ʻole i hoʻokumu ʻia e nā mea e like me ka uila uila kiʻekiʻe, ka walaʻau, nā refrigerants haʻahaʻa haʻahaʻa a me nā kumu mana. No laila, pono e hana ʻia nā hana palekana e pili ana: ka nānā ʻana a me ka hoʻokele ʻana i ka ʻōnaehana laser a me ke kaiapuni hana, a me ka palekana pilikino.