Malangizo oti musankhe laser ya fiber ya single-mode

Buku lothandizira kusankhalaser ya fiber ya mode imodzi
Mu ntchito zothandiza, kusankha njira yoyenera yokhala ndi njira imodzilaser ya ulusiimafuna kuyeza mwadongosolo magawo osiyanasiyana kuti zitsimikizire kuti magwiridwe ake akugwirizana ndi zofunikira zinazake zogwiritsira ntchito, malo ogwirira ntchito komanso zoletsa bajeti. Gawoli lipereka njira yothandiza yosankhira kutengera zofunikira.
Njira yosankha kutengera zochitika zogwiritsira ntchito
Zofunikira pakuchita bwino kwama laserzimasiyana kwambiri pazochitika zosiyanasiyana zogwiritsira ntchito. Gawo loyamba posankha ndikulongosola bwino zomwe zimafunika pakugwiritsa ntchito.
Kukonza zinthu molondola komanso kupanga micro-nano: Ntchito zoterezi zikuphatikizapo kudula bwino, kuboola, kugawa ma semiconductor wafer, kuyika chizindikiro cha micron ndi kusindikiza kwa 3D, ndi zina zotero. Ali ndi zofunikira kwambiri pa khalidwe la beam ndi kukula kwa malo olunjika. Laser yokhala ndi M² factor yofanana ndi 1 (monga <1.1) iyenera kusankhidwa. Mphamvu yotulutsa iyenera kutsimikiziridwa kutengera makulidwe a zinthu ndi liwiro lokonza. Nthawi zambiri, mphamvu kuyambira makumi mpaka mazana a ma watts imatha kukwaniritsa zofunikira za micro-processing yambiri. Ponena za kutalika kwa nthawi, 1064nm ndiye chisankho chomwe chimakondedwa kwambiri pa kukonza zinthu zachitsulo chifukwa cha kuchuluka kwake koyamwa komanso mtengo wotsika pa watt iliyonse ya mphamvu ya laser.
Kafukufuku wa sayansi ndi muyeso wapamwamba: Zochitika zogwiritsira ntchito zimaphatikizapo ma tweezers optical, fizikisi ya atomu yozizira, spectroscopy yapamwamba kwambiri ndi interferometry. Magawo awa nthawi zambiri amakhala ndi kutsata kwakukulu kwa monochromaticity, kukhazikika kwa ma frequency ndi magwiridwe antchito a phokoso la ma laser. Ma model okhala ndi mzere wopapatiza (ngakhale ma frequency amodzi) ndi phokoso lotsika ayenera kuperekedwa patsogolo. Kutalika kwa mafunde kuyenera kusankhidwa kutengera mzere wa resonance wa atomu kapena molekyulu inayake (mwachitsanzo, 780nm imagwiritsidwa ntchito kwambiri poziziritsa maatomu a rubidium). Kutulutsa kosasamala nthawi zambiri kumakhala kofunikira pakuyesa kusokoneza. Kufunikira kwa mphamvu nthawi zambiri sikokwera, ndipo ma milliwatts mazana angapo mpaka ma watts angapo nthawi zambiri amakhala okwanira.
Zachipatala ndi za sayansi ya zamoyo: Ntchito zake zikuphatikizapo opaleshoni ya maso, chithandizo cha khungu ndi kujambula zithunzi za fluorescence microscopy. Chitetezo cha maso ndicho chinthu chofunika kwambiri kuganizira, kotero ma laser okhala ndi mafunde a 1550nm kapena 2μm, omwe ali mu gulu la chitetezo cha maso, nthawi zambiri amasankhidwa. Pa ntchito zowunikira, chisamaliro chiyenera kuperekedwa ku kukhazikika kwa mphamvu; Pa ntchito zochizira, mphamvu yoyenera iyenera kusankhidwa kutengera kuzama kwa chithandizo ndi mphamvu zomwe zimafunika. Kusinthasintha kwa kutumiza kwa kuwala ndi phindu lalikulu pa ntchito zotere.
Kulankhulana ndi Kuzindikira: Kuzindikira kwa fiber optic, liDAR ndi kulumikizana kwa mlengalenga ndi ntchito zomwe zimachitika nthawi zambiri. Zochitika izi zimafunalaserkukhala ndi kudalirika kwakukulu, kusinthasintha kwa chilengedwe komanso kukhazikika kwa nthawi yayitali. Gulu la 1550nm lakhala chisankho chokondedwa chifukwa cha kutayika kochepa kwambiri kwa ma transmission mu ulusi wa kuwala. Pa makina ozindikira ogwirizana (monga coherent lidar), laser yolumikizidwa ndi mzere wopapatiza kwambiri imafunika ngati oscillator yakomweko.
2. Kusankha magawo ofunikira kwambiri
Poyang'anizana ndi magawo osiyanasiyana, zisankho zitha kupangidwa kutengera zinthu zofunika kwambiri izi:
Magawo ofunikira: Choyamba, dziwani mtundu wa kutalika kwa thambo ndi kuwala kwa dzuwa. Kutalika kwa thambo kumatsimikiziridwa ndi zofunikira zofunika pakugwiritsa ntchito (makhalidwe ogwiritsira ntchito zinthu, miyezo yachitetezo, mizere ya ma atomu), ndipo nthawi zambiri palibe malo oti muchepetse. Ubwino wa kuwala kwa dzuwa umatsimikizira mwachindunji kuthekera kogwiritsa ntchito. Mwachitsanzo, makina olondola sangalandire ma laser okhala ndi M² wokwera kwambiri.
Magawo a magwiridwe antchito: Kachiwiri, samalani mphamvu yotulutsa ndi m'lifupi mwa mzere/polarization. Mphamvuyo iyenera kukwaniritsa malire a mphamvu kapena zofunikira pakugwiritsa ntchito bwino kwa pulogalamuyo. Makhalidwe a m'lifupi ndi polarization amatsimikiziridwa kutengera njira yeniyeni yaukadaulo ya pulogalamuyo (monga ngati pali kusokoneza kapena kuwirikiza kawiri kwa ma frequency). Magawo othandiza: Pomaliza, ganizirani kukhazikika (monga kukhazikika kwa mphamvu yotulutsa kwa nthawi yayitali), kudalirika (nthawi yogwira ntchito yopanda cholakwika), kugwiritsa ntchito mphamvu ya voliyumu, kugwirizanitsa mawonekedwe ndi mtengo. Magawo awa amakhudza kuvutika kophatikizana ndi mtengo wonse wa umwini wa laser pamalo enieni ogwirira ntchito.

3. Kusankha ndi kuweruza pakati pa mode imodzi ndi mode yambiri
Ngakhale nkhaniyi ikuyang'ana kwambiri pa single-modema laser a ulusi, ndikofunikira kumvetsetsa bwino kufunika kosankha njira imodzi posankha yeniyeni. Pamene zofunikira zazikulu za pulogalamu ndi kulondola kwambiri pakukonza, malo ochepa kwambiri omwe amakhudzidwa ndi kutentha, kuthekera koyang'ana kwambiri kapena mtunda wautali kwambiri wotumizira, laser ya ulusi wa njira imodzi ndiyo chisankho chokhacho cholondola. Mosiyana ndi zimenezi, ngati ntchitoyo ikuphatikizapo kuwotcherera mbale yokhuthala, kukonza malo akuluakulu kapena kutumiza mphamvu yayitali mtunda wautali, ndipo kufunikira kolondola kwathunthu sikuli kwakukulu, ndiye kuti ma laser a ulusi wa multimode akhoza kukhala chisankho chotsika mtengo komanso chothandiza chifukwa cha mphamvu zawo zonse komanso mtengo wotsika.