ʻElua ʻenehana Laser Laina Laina Haiki
I ka makahiki 1960, ʻo ka laser ruby mua o ka honua he laser solid-state, i hōʻike ʻia e ka ikehu kiʻekiʻe a me ka uhi ʻana i ka lōʻihi hawewe. ʻO ke ʻano spatial kūikawā o ka laser solid-state e maʻalahi i ka hoʻolālā ʻana o ka puka laina laina haiki. I kēia manawa, ʻo nā ʻano hana nui i hoʻokō ʻia e pili ana i ke ʻano o ka lua pōkole, ke ʻano o ke apo apo hoʻokahi ala, ke ʻano maʻamau intracavity, ke ʻano o ka torsion pendulum mode cavity, volume Bragg grating method and seed injection method.
Hōʻike ka Figure 7 i ke ʻano o kekahi mau laser solid-state maʻamau.
Hōʻike ka Figure 7 (a) i ke kumu hana o ke koho mode longitudinal hoʻokahi e pili ana i ka maʻamau FP in-cavity, ʻo ia hoʻi, ke hoʻohana ʻia ka spectrum transmission linewidth haiki o ka maʻamau e hoʻonui i ka nalowale o nā mode longitudinal ʻē aʻe, i kānana ʻia nā mode longitudinal ʻē aʻe i ke kaʻina hoʻokūkū mode ma muli o kā lākou transmittance liʻiliʻi. Eia kekahi, hiki ke loaʻa i kekahi ʻano o ka hawewe hoʻoheheʻe ʻana ma o ka hoʻomalu ʻana i ka Angle a me ka mahana o ka maʻamau FP a me ka hoʻololi ʻana i ke kaʻina mode longitudinal. FIG. 7(b) a me (c) hōʻike i ka non-planar ring oscillator (NPRO) a me ka torsional pendulum mode cavity method i hoʻohana ʻia no ka loaʻa ʻana o ka puka hoʻokahi mode longitudinal. ʻO ke kumu hana, ʻo ia ka hoʻolaha ʻana o ka beam ma kahi ʻaoʻao hoʻokahi i ka resonator, e hoʻopau pono i ka puʻunaue spatial like ʻole o ka helu o nā mea i hoʻohuli ʻia i loko o ke ana nalu kū maʻamau, a pēlā e pale aku ai i ka hopena o ka hopena wela o ka lua spatial e hoʻokō i kahi hoʻopuka mode longitudinal. ʻO ke kumumanaʻo o ke koho mode Bragg grating (VBG) e like me ka semiconductor a me ka fiber narrow line-width lasers i ʻōlelo ʻia ma mua, ʻo ia hoʻi, ma ka hoʻohana ʻana i ka VBG ma ke ʻano he kānana, e pili ana i kāna koho spectral maikaʻi a me ke koho Angle, oscillator ka oscillator i kahi nalu kikoʻī a i ʻole ka band e hoʻokō i ke kuleana o ke koho mode longitudinal, e like me ka hōʻike ʻana ma ke Kiʻi.
I ka manawa like, hiki ke hoʻohui ʻia kekahi mau ʻano koho mode longitudinal e like me ka pono e hoʻomaikaʻi i ka pololei o ke koho mode longitudinal, e hōʻemi hou i ka laina laina, a i ʻole e hoʻonui i ka ikaika o ka hoʻokūkū mode ma o ka hoʻokomo ʻana i ka hoʻololi ʻana i ke alapine nonlinear a me nā ʻano ʻē aʻe, a hoʻonui i ka lōʻihi o ka hawewe o ka laser i ka wā e hana ana i kahi laina laina haiki, he mea paʻakikī ke hana.laser semiconductoranā laser fiber.
(4) Laser Brillouin
Hoʻokumu ʻia ka laser Brillouin i ka hopena hoʻoulu ʻia ʻo Brillouin scattering (SBS) e loaʻa ai ka leo haʻahaʻa, ʻenehana laina laina haʻahaʻa, ʻo kāna kumu ma o ka photon a me ka launa pū ʻana o ka acoustic kūloko e hana i kahi hoʻololi pinepine o Stokes photons, a hoʻonui mau ʻia i loko o ka bandwidth loaʻa.
Hōʻike ka Figure 8 i ke kiʻikuhi pae o ka hoʻololi SBS a me ke ʻano kumu o ka laser Brillouin.
Ma muli o ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa o ke kahua acoustic, ʻo ka hoʻololi pinepine ʻana o ka Brillouin o ka mea maʻamau he 0.1-2 cm-1 wale nō, no laila me ka laser 1064 nm e like me ke kukui pump, ʻo ka lōʻihi o ka hawewe Stokes i hana pinepine ʻia ma kahi o 1064.01 nm, akā ʻo ia hoʻi ke kiʻekiʻe loa o kona hoʻololi quantum maikaʻi i ke kumumanaʻo (a hiki i 99.99%). Eia kekahi, no ka loaʻa ʻana o ka Brillouin linewidth o ka mea maʻamau ma ke kauoha o MHZ-ghz (ʻo ka Brillouin loaʻa ka linewidth o kekahi media paʻa ma kahi o 10 MHz wale nō), ʻoi aku ka liʻiliʻi ma mua o ka loaʻa ʻana o ka laina laina o ka mea hana laser o ke kauoha o 100 GHz, no laila, ʻo nā Stokes hauʻoli i ka Brillouin laser hiki ke hōʻike i ka hōʻike ʻana i ka hōʻike ʻana i ka laina ākea ākea ma hope o ka hōʻike ʻana i ka laina ākea ākea. ʻoi aku ka liʻiliʻi o nā kauoha o ka nui ma mua o ka laulā laina pamu. I kēia manawa, ua lilo ʻo Brillouin laser i wahi wela no ka noiʻi ʻana ma ke kahua photonics, a ua nui nā hōʻike e pili ana i ka Hz a me ka sub-Hz kauoha o ka puka laina laina haiki.
I nā makahiki i hala iho nei, ua puka mai nā mea hana ʻo Brillouin me ka hoʻolālā alakaʻi nalu ma ke kahua okiʻi kiʻi microwave, a ke ulu wikiwiki nei i ke ala o ka miniaturization, ka hoʻohui kiʻekiʻe a me ka hoʻonā kiʻekiʻe. Eia kekahi, ʻo ka laser Brillouin e holo ana i ka lewa e pili ana i nā mea aniani hou e like me ka daimana ua komo pū i ka ʻike o nā kānaka i nā makahiki ʻelua i hala iho nei, ʻo kona holomua ʻana i ka mana o ka hale alakaʻi nalu a me ka bottleneck cascade SBS, ka mana o ka laser Brillouin i 10 W magnitude, e kau ana i ke kumu no ka hoʻonui ʻana i kāna noi.
Hui nui
Me ka ʻimi mau ʻana o ka ʻike ʻokiʻoki, ua lilo nā lasers linewidth haiki i mea pono loa i ka noiʻi ʻepekema me kā lākou hana maikaʻi loa, e like me ka laser interferometer LIGO no ka ʻike hawewe gravity, e hoʻohana ana i kahi laina laina haiki.laserme ka lōʻihi nalu o 1064 nm ma ke ʻano he kumu hua, a ʻo ka laina laina o ke kukui hua ma loko o 5 kHz. Eia kekahi, ʻo nā lasers ākea ākea me ka hawewe lōʻihi a ʻaʻohe mode lele e hōʻike i ka mana noi nui, ʻoi aku hoʻi i nā kamaʻilio koʻikoʻi, hiki ke hoʻokō pono i nā pono o ka wavelength division multiplexing (WDM) a i ʻole ka frequency division multiplexing (FDM) no ka hawewe (a i ʻole ke alapine) tunability, a ua manaʻo ʻia e lilo i mea nui o ka hanauna hou o ka ʻenehana kamaʻilio kelepona.
I ka wā e hiki mai ana, ʻo ka hana hou ʻana o nā mea laser a me ka ʻenehana hana e hoʻoikaika hou i ka hoʻopiʻi ʻana i ka laina laina laser, ka hoʻomaikaʻi ʻana i ka paʻa pinepine, ka hoʻonui ʻana o ka lōʻihi o ka nalu a me ka hoʻomaikaʻi ʻana i ka mana, e hoʻokaʻawale i ke ala no ka ʻimi kanaka o ka honua ʻike ʻole.
Ka manawa hoʻouna: Nov-29-2023