Hoʻomohala a me ke kūlana mākeke o ka laser tunable Mahele ʻelua

Hoʻomohala a me ke kūlana mākeke o ka laser tunable (Mahele ʻelua)

Kuina hana olaser hiki ke hoʻopaʻa ʻia

Aia ma kahi o ʻekolu mau loina no ka hoʻokō ʻana i ke kani ʻana o ka lōʻihi hawewe laser. ʻO ka hapa nuinā lasers hiki ke hoʻopaʻa ʻiahoʻohana i nā mea hana me nā laina fluorescent ākea. He haʻahaʻa loa nā poho o nā resonator i hana i ka laser ma luna o kahi laulā haiki loa. No laila, ʻo ka mea mua e hoʻololi i ka nalu nalu o ka laser ma o ka hoʻololi ʻana i ka nalu haʻahaʻa e pili ana i ka ʻāpana poho haʻahaʻa o ka resonator e kekahi mau mea (e like me ka grating). ʻO ka lua, ʻo ia ka hoʻololi ʻana i ka pae ikehu o ka hoʻololi ʻana i ka laser ma o ka hoʻololi ʻana i kekahi mau ʻāpana o waho (e like me ke kahua magnetic, ka mahana, a me nā mea ʻē aʻe). ʻO ke kolu, ʻo ia ka hoʻohana ʻana i nā hopena nonlinear e hoʻokō ai i ka hoʻololi ʻana a me ke kani ʻana o ka nalu nalu (e ʻike i nā optics nonlinear, hoʻoulu ʻia ʻo Raman scattering, optical frequency doubled, optical parametric oscillation). ʻO nā laser maʻamau i pili i ke ʻano hoʻokani mua ʻo ia nā lasers dye, nā laser chrysoberyl, nā laser kikowaena kala, nā lasers kaomi kiʻekiʻe kiʻekiʻe a me nā laser excimer tunable.

ʻO ka laser Tunable mai ka hiʻohiʻona o ka ʻenehana hoʻokō ua māhele nui ʻia i: ʻenehana mana o kēia manawa, ʻenehana kaohi wela a me ka ʻenehana mana mechanical.
I waena o lākou, ʻo ka ʻenehana hoʻokele uila e hoʻokō i ka hawewe lōʻihi ma ka hoʻololi ʻana i ka manawa injection, me ka NS-level tuning speed, wide tuning bandwidth, akā liʻiliʻi ka mana hoʻopuka, e pili ana i ka ʻenehana mana uila nui loa SG-DBR (sampling grating DBR) a GCSR laser (auxiliary grating directional coupling backward-sampling reflection) . Hoʻololi ka ʻenehana hoʻomalu wela i ka lōʻihi o ka hawewe o ka laser ma o ka hoʻololi ʻana i ka index refractive o ka ʻāpana hana laser. He maʻalahi ka ʻenehana, akā lohi, a hiki ke hoʻoponopono ʻia me kahi ākea ākea o kahi mau nm wale nō. ʻO nā mea nui e pili ana i ka ʻenehana mālama welaDFB laser(ka hāʻawi ʻana i nā manaʻo) a me ka DBR laser (Distributed Bragg reflection). Hoʻokumu nuiʻia ka mana mechanical ma luna o kaʻenehana MEMS (micro-electro-mechanical system) no ka hoʻopauʻana i ke kohoʻana o ka nalu nalu, me ka bandwidth hiki ke hoʻololi nui, ka mana kiʻekiʻe. ʻO nā hale nui e pili ana i ka ʻenehana hoʻokele mechanical ʻo DFB (distributed feedback), ECL (external cavity laser) a me VCSEL (vertical cavity surface emitting laser). Ua wehewehe ʻia kēia mai kēia mau ʻāpana o ke kumu o nā lasers tunable.

Ke noi kamaʻilio Optical

ʻO ka laser Tunable kahi mea optoelectronic koʻikoʻi i loko o kahi hanauna hou o ka ʻōnaehana multiplexing hawewe lōʻihi a me ka hoʻololi photon i ka ʻoihana āpau-optical. Hoʻonui nui kāna noi i ka hiki, hiki ke maʻalahi a me ka scalability o ka ʻōnaehana hoʻouna fiber optical, a ua ʻike i ka hoʻokani mau ʻana a i ʻole quasi-continuous tuning ma kahi ākea ākea.
Ke hoʻoikaika ikaika nei nā ʻoihana a me nā ʻoihana noiʻi a puni ka honua i ka noiʻi a me ka hoʻomohala ʻana i nā lasers tunable, a ke hana mau nei ka holomua hou ma kēia kahua. Hoʻomaikaʻi mau ʻia ka hana o nā laser tunable a hoʻemi mau ʻia ke kumukūʻai. I kēia manawa, hoʻokaʻawale ʻia nā laser tunable i ʻelua mau ʻāpana: semiconductor tunable lasers a me tunable fiber lasers.
Semiconductor laserhe kumu kukui koʻikoʻi i ka ʻōnaehana kamaʻilio optical, nona nā ʻano o ka liʻiliʻi liʻiliʻi, ke kaumaha māmā, ka hoʻololi kiʻekiʻe o ka hoʻololi ʻana, ka mālama ʻana i ka mana, a me nā mea ʻē aʻe, a maʻalahi hoʻi e hoʻokō i ka hoʻohui optoelectronic chip hoʻokahi me nā mea hana ʻē aʻe. Hiki ke hoʻokaʻawale ʻia i ka laser manaʻo hoʻokaʻawale tunable, hāʻawi ʻia i ka laser mirror Bragg, micromotor system vertical cavity surface emitting laser a me waho ka lua semiconductor laser.
ʻO ka hoʻomohala ʻana o ka laser fiber tunable ma ke ʻano he mea waiwai a me ka hoʻomohala ʻana i ka diode laser semiconductor ma ke ʻano he puna wai i hoʻoikaika nui i ka hoʻomohala ʻana i nā laser fiber. Hoʻokumu ʻia ka laser tunable ma ka 80nm gain bandwidth o ka doped fiber, a ua hoʻohui ʻia ka mea kānana i ka loop e hoʻomalu i ka lōʻihi o ka nalu a ʻike i ke kani ʻana o ka nalu.
ʻO ka hoʻomohala ʻana o ka laser semiconductor tunable he ikaika loa i ka honua, a wikiwiki hoʻi ka holomua. Ke hoʻokokoke mālie nei nā lasers tunable i nā laser lōʻihi paʻa ma ke ʻano o ke kumukūʻai a me ka hana, e hoʻohana nui ʻia lākou i nā ʻōnaehana kamaʻilio a pāʻani i kahi koʻikoʻi i nā ʻoihana āpau-optical e hiki mai ana.

Ka manaʻo hoʻomohala
Nui nā ʻano o nā lasers tunable, i hoʻomohala ʻia e ka hoʻolauna hou ʻana i nā mīkini hoʻokani nalu ma ke kumu o nā lasers lōʻihi hoʻokahi, a ua hāʻawi ʻia kekahi mau waiwai i ka mākeke honua. Ma waho aʻe o ka hoʻomohala ʻana i nā lasers tunable hoʻomau, ua hōʻike pū ʻia nā lasers tunable me nā hana ʻē aʻe, e like me ka laser tunable i hoʻohui ʻia me kahi pahu hoʻokahi o VCSEL a me kahi modulator absorption uila, a me ka laser i hoʻohui ʻia me kahi hōʻailona grating Bragg reflector. a me kahi mea hoʻonui ʻike semiconductor a me kahi modulator hoʻoheheʻe uila.
Ma muli o ka hoʻohana nui ʻia o ka laser tunable wavelength, hiki ke hoʻohana ʻia ka laser tunable o nā ʻano like ʻole i nā ʻōnaehana like ʻole, a loaʻa i kēlā me kēia mea nā pono a me nā hemahema. Hiki ke hoʻohana ʻia ka laser cavity semiconductor ma ke ʻano he kumu kukui tunable wideband i nā mea hana hoʻāʻo pololei ma muli o kona mana kiʻekiʻe a me ka lōʻihi o ka hawewe. Mai ka hiʻohiʻona o ka hoʻohui photon a me ka hālāwai ʻana i ka ʻupena optical āpau e hiki mai ana, ʻo ka DBR hōʻailona hōʻailona, ​​​​DBR superstructured grating a me nā laser tunable i hoʻohui ʻia me nā modulators a me nā mea hoʻonui e hoʻohiki i nā kumu kukui tunable no Z.
ʻO ka laser tunable fiber grating me ka lua o waho he ʻano hoʻohiki maikaʻi nō hoʻi ia o ke kumu māmā, nona ke ʻano maʻalahi, ka laulā laina haiki a me ka hoʻopili ʻana i ka fiber maʻalahi. Inā hiki ke hoʻohui ʻia ka modulator EA i loko o ka lua, hiki ke hoʻohana ʻia ma ke ʻano he kumu soliton optical tunable kiʻekiʻe. Eia kekahi, ua holomua nui nā laser fiber tunable e pili ana i nā laser fiber i nā makahiki i hala iho nei. Hiki ke manaʻo ʻia e hoʻomaikaʻi hou ʻia ka hana o nā laser tunable i nā kumu kukui kamaʻilio optical, a e piʻi mālie ka mākeke, me nā manaʻo noiʻi maikaʻi loa.