Hangarau puna taiaho mo te whakamaarama muka whatu Wāhanga Tuarua
2.2 Takitahi roangaru tahipuna laser
Ko te whakatutukitanga o te sweep roangaru kotahi taiaho ko te tikanga ki te whakahaere i nga ahuatanga tinana o te taputapu i roto i tetaiahokohao (te nuinga o te roangaru pokapū o te bandwidth whakahaere), kia rite ki te whakatutuki i te mana me te kowhiringa o te aratau roa oscillating i roto i te rua, kia tutuki ai te kaupapa o te whakatikatika i te roangaru whakaputa.I runga i tenei kaupapa, i te timatanga o nga tau 1980, ko te tino whakatutukihia o nga laser muka tunable ma te whakakapi i te mata whakaata o te taiaho me te kupenga huritao whakaata, me te kowhiri i te aratau kohao taiaho ma te huri-a-ringa me te tarai i te pae kupenga rereke.I te tau 2011, Zhu et al.i whakamahia nga whiriwhiringa kaare hei whakatutuki i te whakaputanga taiaho kotahi te roangaru me te whanui raina whaiti.I roto i te 2016, i whakamahia te tikanga whakakope a Rayleigh linewidth ki te rua-wavelength compression, ara, i tukuna te ahotea ki te FBG ki te whakatutuki i te taiaho taiaho-rua-roa, a, i te wa ano i aroturukihia te raina raina laser whakaputa, ka whiwhi i te awhe o te roangaru o te 3 nm.Putanga pūmau te roangaru-rua me te whanui raina tata ki te 700 Hz.I te 2017, Zhu et al.i whakamahia te graphene me te micro-nano muka Bragg pae kupenga ki te hanga i te whiriwhiringa katoa-optical tunable, a ka honoa ki te Brillouin laser narrowing hangarau, whakamahia te pānga photothermal o te graphene tata ki te 1550 nm ki te whakatutuki i te whanui raina taiaho iti iho i te 750 Hz me te tere o te whakahaere whakaahua. matawai tika o 700 MHz/ms i roto i te awhe roangaru o 3.67 nm.Ka rite ki whakaaturia i roto i te Figure 5. Ko te tikanga whakahaere roangaru i runga fele ite te kōwhiringa aratau taiaho mā te huri tika autaki ranei te roangaru pokapū passband o te pūrere i roto i te kōhao taiaho.
Fig. 5 (a) Tatūnga whakamātautau o te roangaru whatu-whakahaere-taiaho muka tunableme te punaha ine;
(b) Awhiowhio putanga i te putanga 2 me te whakarei ake o te papu whakahaere
2.3 Te puna marama laser ma
Ko te whanaketanga o te puna marama ma kua pa ki nga waahanga rereke penei i te rama tungsten halogen, rama deuterium,taiaho hikohikome te puna marama supercontinuum.Ina koa, ko te puna marama supercontinuum, i raro i te whakaihiihi o te femtosecond, te picosecond pulses ranei me te mana super transient, e whakaputa ana i nga paanga kore o nga momo ota i roto i te kaiarahi ngaru, me te whanui o te awhiowhio, ka taea te hipoki i te roopu mai i te marama kitea ki te tata infrared, a he kaha te hono.I tua atu, ma te whakatikatika i te marara me te kore raina o te muka motuhake, ka taea te toro atu ki te roopu infrared-waenganui.Ko tenei momo puna laser kua tino whakamahia i roto i nga mara maha, penei i te tomography coherence optical, te kitenga hau, te whakaahua koiora me etahi atu.Nā te whāititanga o te mātāpuna marama me te reo kore rārangi, ko te tūāwhiorangi supercontinuum wawe i te nuinga o te hanga e te taiaho totoka e papu ana karaihe whatu ki te whakaputa i te tūāwhiorangi supercontinuum i roto i te awhe kitea.Mai i tera wa, kua huri haere te muka whatu hei reo tino pai mo te whakaputa i te supercontinuum whaanui na te nui o te whakarea kore raina me te mara aratau tuku iti.Ko nga paanga kore-raina matua ko te whakaranu ngaru e wha, te koretake o te whakarereketanga, te whakarereketanga-whaiaro, te huringa-waahanga whakawhiti, te wehenga soliton, te whakamararatanga Raman, te nekehanga auau-whaiaro soliton, me era atu, he rereke ano te wahanga o ia paanga i runga i te te whanui o te pupuhi o te pupuhi whakaihiihi me te marara o te muka.I te nuinga o te waa, inaianei ko te puna marama supercontinuum te nuinga ki te whakapai ake i te mana taiaho me te whakawhänui i te awhe spectral, me te aro ki tana mana honohono.
3 Whakarāpopototanga
Ka whakarāpopotohia, ka arotakehia e tenei pepa nga puna taiaho e whakamahia ana hei tautoko i te hangarau whakaata muka, tae atu ki te taiaho whanui raina whaiti, te taiaho kotahi te auau me te taiaho ma.Ko nga whakaritenga tono me te mana whakawhanaketanga o enei lasers i roto i te waahi o te hiranga o te muka ka whakauruhia ki roto i nga korero.Na roto i te tātari i o raatau whakaritenga me te mana whanaketanga, ka whakatauhia ko te puna taiaho pai rawa atu mo te whakaraerae muka ka taea te whakatutuki i te putanga taiaho tino whaiti me te tino pumau i nga roopu me nga wa katoa.Na reira, ka timata tatou ki te taiaho whanui raina whaiti, taiaho whanui raina whaiti me te taiaho marama ma me te whanui whanui taonga, a ka kitea he huarahi whai hua ki te mohio ki te puna taiaho pai mo te taatai muka ma te tātari i o raatau whanaketanga.
Te wa tuku: Noema-21-2023