Kamaʻilio Quantum: nā lasers linewidth haiki

Kamaʻilio Quantum:nā lasers linewidth haiki

Laser laina laulā haikiʻO ia kekahi ʻano laser me nā waiwai optical kūikawā, i hōʻike ʻia e ka hiki ke hana i kahi kukuna laser me kahi linewidth optical liʻiliʻi loa (ʻo ia hoʻi, spectrum haiki). ʻO ka laulā laina o kahi laser linewidth haiki e pili ana i ka laulā o kāna spectrum, i hōʻike pinepine ʻia ma ka bandwidth i loko o kahi alapine unit, a ua ʻike ʻia kēia laulā ʻo ia ka "spectral line width" a i ʻole "line width" wale nō. Loaʻa i nā lasers linewidth haiki kahi laulā laina haiki, ma waena o kekahi mau haneli kilohertz (kHz) a me kekahi mau megahertz (MHz), ʻoi aku ka liʻiliʻi ma mua o ka laulā laina spectral o nā lasers maʻamau.

Hoʻokaʻawale ʻana ma ke ʻano o ka lua:

1. Ua māhele ʻia nā lasers fiber cavity linear i ke ʻano noʻonoʻo Bragg i hoʻolaha ʻia (DBR Laser) a me ke ʻano manaʻo i hoʻolaha ʻia (Laser DFB) ʻelua mau hale. ʻO ka laser puka o nā lasers ʻelua he kukui kūlike loa me ka linewidth haiki a me ka walaʻau haʻahaʻa. Hiki i ka laser fiber DFB ke hoʻokō i ka manaʻo laser a melaserke koho ʻana o ke ʻano, no laila ua maikaʻi ke kūpaʻa o ka alapine laser output, a ua maʻalahi ka loaʻa ʻana o ka hoʻopuka ʻano longitudinal hoʻokahi paʻa.

2. Hoʻopuka nā lasers fiber apo-cavity i nā lasers ākea haiki ma ka hoʻokomo ʻana i nā kānana band haiki e like me nā lua hoʻopilikia Fabry-Perot (FP), fiber grating a i ʻole nā ​​lua apo sagnac i loko o ka lua. Eia nō naʻe, ma muli o ka lōʻihi o ka lua, he liʻiliʻi ka manawa mode longitudinal, a he maʻalahi ke lele i ke ʻano ma lalo o ka mana o ke kaiapuni, a he haʻahaʻa ke kūpaʻa.

Hoʻohana Huahana:

1. Mea ʻike maka ʻO ka laser ākea haiki ma ke ʻano he kumu kukui kūpono no nā mea ʻike fiber optical, ma ka hui pū ʻana me nā mea ʻike fiber optical, hiki ke hoʻokō i ke ana kiʻekiʻe a me ke ana kiʻekiʻe. No ka laʻana, i nā mea ʻike fiber optic kaomi a mahana paha, ʻo ke kūpaʻa o ka laser linewidth haiki e kōkua i ka hōʻoia ʻana i ka pololei o nā hopena ana.

2. Ke ana ʻana o ka spectral kiʻekiʻe Loaʻa i nā lasers linewidth haiki nā laulā laina spectral haiki loa, e lilo ana lākou i mau kumu kūpono no nā spectrometers hoʻonā kiʻekiʻe. Ma ke koho ʻana i ka nalu kūpono a me ka linewidth, hiki ke hoʻohana ʻia nā lasers linewidth haiki no ka nānā ʻana i ka spectral pololei a me ke ana ʻana o ka spectral. No ka laʻana, i nā mea ʻike kinoea a me ka nānā ʻana i ke kaiapuni, hiki ke hoʻohana ʻia nā lasers linewidth haiki e hoʻokō i nā ana pololei o ka absorption optical, ka hoʻokuʻu optical a me nā spectra molecular i ka lewa.

3. Loaʻa i nā lasers fiber laulā laina haiki hoʻokahi alapine (frequency) Lidar nā noi koʻikoʻi loa i nā ʻōnaehana liDAR a i ʻole laser ranging. Me ka hoʻohana ʻana i ka laser fiber laulā laina haiki hoʻokahi alapine ma ke ʻano he kumu kukui ʻike, i hui pū ʻia me ka ʻike ʻana i ka coherence optical, hiki iā ia ke kūkulu i kahi liDAR mamao loa (haneli kilomita) a i ʻole rangefinder. Loaʻa i kēia kumumanaʻo ke kumumanaʻo hana like me ka ʻenehana OFDR i ka fiber optical, no laila ʻaʻole wale ia he hoʻonā spatial kiʻekiʻe loa, akā hiki nō hoʻi ke hoʻonui i ka mamao ana. Ma kēia ʻōnaehana, ʻo ka laulā laina spectral laser a i ʻole ka lōʻihi coherence e hoʻoholo i ka laulā ana mamao a me ka pololei o ke ana ʻana, no laila ʻoi aku ka maikaʻi o ka coherence o ke kumu kukui, ʻoi aku ka kiʻekiʻe o ka hana o ka ʻōnaehana holoʻokoʻa.