Te hoahoa ara whatu o te muka polarizedrēseri whānui-rārangi whaiti
1. Tirohanga Whānui
He taiaho whānui-rārangi whāiti muka porowhita 1018 nm. Ko te roanga ngaru mahi he 1018 nm, ko te mana whakaputa taiaho he 104 W, ko te whānui āwhata o te 3 dB me te 20 dB he ~21 GHz me te ~72 GHz ia, ko te ōwehenga whakamōrearea porowhita he >17.5 dB, ā, he teitei te kounga o te hihi (2 x M – 1.62 me te 2 y M) Apūnaha taiahome te whai huatanga o te pari o te 79% (∼1.63).
2. Whakaahuatanga ara whatu
I roto i tētahitaiaho whānui-rārangi muka porowhita, ko te oscillator muka reera porowhita-rārangi he mea tito mai i te takirua o ngā whariki muka pupuri-porowhita me te muka pupuri-porowhita takirua 1.5-mita te roa, he 10/125 μm te roa, he mea pani ki te ytterbium-whakakikorua hei reo whakanui. Ko te tauwehenga mimiti o tēnei muka whatu i te 976 nm he 5 dB/m. Ka pupuhihia te oscillator reera e te 976 nm te roa o te ngaru-raka.rēhia haurua-irame te mana mōrahi o te 27 W mā te whakakotahi hihi (1+1)×1 e pupuri ana i te polarity. Ko te whakaata o te whatu whakaata teitei he neke atu i te 99%, ā, ko te whānui o te whakaata 3 dB he tata ki te 0.22 nm. Ko te whakaata iti o te whatu he 40%, ā, ko te whānui o te whakaata 3 dB he tata ki te 0.216 nm. Ko ngā roangaru whakaata pokapū o ngā whatu e rua kei te 1018 nm. Hei whakataurite i te mana putanga o te resonator laser me te ōwehenga pehi ASE, i arotauhia te whakaata iti o te whatu ki te 40%. Ka honoa te muka hiku o te whatu whakaata-teitei ki te muka whakanui, ko te muka hiku o te whatu whakaata-iti ka hurihia 90° ka honoa ki te muka hiku o te tātari whakakikorua. Nō reira, ko te tūranga tihi o te roangaru whakaata tuaka-tere o te whatu whakaata-teitei e ōrite ana ki te roangaru whakaata tuaka-pōturi o te whatu whakaata-iti. Mā tēnei, kotahi anake te taiaho porowhita ka taea te wiri i roto i te kōhao whakakorikori. Ko te rama papu e toe ana i roto i te whakakikorua muka whatu ka tātarihia e te tātari whakakikorua i hangaia e ia anō kua honoa ki roto i te kōhao whakakorikori, ā, ka whakapikohia te hiku putanga e 8° hei ārai i te urupare mata pito me te wiri pirinoa.
3. Mātauranga papamuri
Te tikanga whakaputa o ngā taiaho muka porowhita-rārangi: Nā te pānga o te ahotea birefringence, e rua ngā tuaka porowhita-ā-whatu o te muka pupuri-porowhita āhua-pea, e mōhiotia ana ko te tuaka tere me te tuaka puhoi. I te nuinga o te wā, nā te mea he nui ake te taupū whakaata o te tuaka puhoi i tērā o te tuaka tere, e rua ngā roangaru pokapū rerekē o te kupenga kua tuhia ki runga i te muka pupuri-porowhita. Ko te kōhao resonant o te taiaho muka porowhita-rārangi he mea tito i ngā kupenga pupuri-porowhita e rua. Ka rite ngā roangaru o te kupenga whakaata-iti me te kupenga whakaata-tiketike i runga i te tuaka tere me te tuaka puhoi. Ina he whaiti te whānui whakaata o te kupenga pupuri-porowhita, ka taea te wehe i ngā hihi tuku i roto i ngā ahunga o te tuaka tere me te tuaka puhoi, ā, ka taea e ngā roangaru e rua te wiri i roto i te kōhao resonant. E ai ki te mātāpono o te oscillation rua-roa o te kupenga pupuri-porowhita, i roto i te whakamātautau, ka taea te whakamahi i te tikanga whakarewa whakarara hei whakatutuki. I te wā e whakarewahia ana, ka whakaritea ngā toki pupuri-porowhita o ngā whariki e rua. Mā tēnei, ka rite ngā tihi tuku e rua o te whariki whakaata-tiketike ki ērā o te whariki whakaata-iti, ā, nō reira ka taea te whakatutuki i te putanga taiaho rua-roa-ngaru.
I roto i ngā pūnaha pupuri-polarization laser tūturu, he tohu nui te pi'o rārangi mō te aromatawai i ngā āhuatanga putanga o ngā laser polarization rārangi. I te nuinga o te wā, he nui ake te wā o te whatanga whakaata-teitei i tērā o te whatanga whakaata-iti. Hei whakatutuki i tētahi laser polarization rārangi me te uara PER teitei, kotahi anake te tihi polarization me wiri. Ina kei te taha o te tuaka puhoi o te whatanga whakaata-teitei te tuaka tere o te whatanga whakaata-iti, ko te roangaru waenga i te ahunga tuaka tere o te whatanga whakaata-iti e rite ana ki tērā i te ahunga tuaka puhoi o te whatanga whakaata-teitei, ko te tihi tuku i te ahunga tuaka puhoi o te whatanga whakaata-iti kāore e rite ki te tihi tuku i te ahunga tuaka tere o te whatanga whakaata-teitei. Mā tēnei, ka taea te wiri i tētahi tihi tuku. Waihoki, ina kei te taha o te tuaka tere o te tuaka whakaata-tiketike te tuaka puhoi o te whatu whakaata-iti, ka rite te roangaru waenga o te tuaka puhoi o te whatu whakaata-iti ki te roangaru tere o te whatu whakaata-tiketike, engari kāore te tihi tuku o te tuaka tere o te whatu whakaata-tiketike e rite ki te roangaru puhoi o te whatu whakaata-tiketike. Mā tēnei, ka taea hoki te wiri i te tihi tuku kotahi. Ka taea e ngā tikanga e rua o runga ake nei te whakatutuki i te putanga taiaho porowhita-rārangi. E ai ki te mātāpono wiri taiaho porowhita-rārangi kotahi te roangaru o te whatu pupuri-porowhita, i roto i te whakamātautau, ka taea te whakamahi i te tikanga honohono orthogonal hei whakatutuki. Ina 90° te koki honohono o ngā tuaka pupuri-polarization o te kupenga whakaata teitei me te kupenga whakaata iti, ka rite te tihi tuku i te ahunga tuaka puhoi o te kupenga whakaata teitei ki te tihi tuku i te ahunga tuaka tere o te kupenga whakaata iti, ā, ka taea te whakatutuki i te putanga o te laser muka polarized linearly kotahi-roa.
Wā tuku: Hepetema-12-2025