"Polarization" ndiyo yakajairika hunhu hweakasiyana-siyana lasers, iyo inotemerwa neiyo yekugadzira nheyo yelaser. Thelaser dandainogadzirwa nemwaranzi inosimudzira yechiedza-emitting medium particles mukati melaser. Kusimudzirwa kwemwaranzi kune hunhu hunoshamisa: kana photon yekunze ikarova chidimbu mune yakakwirira simba mamiriro, iyo particle inopenya photon uye shanduko kune yakaderera simba mamiriro. Iwo mafotoni anogadzirwa mukuita uku ane chikamu chimwe chete, kutungamira kwekuparadzira uye polarization mamiriro semafotoni ekunze. Kana rwizi rwephoton rukaumbwa mune laser, ese mafotoni mumodhi photon stream anogovana chikamu chimwe chete, nzira yekuparadzira, uye polarization mamiriro. Naizvozvo, iyo laser longitudinal mode (frequency) inofanirwa kuve polarized.
Haasi ese lasers ari polarized. Iyo polarization mamiriro eiyo laser inokanganiswa nezvakati wandei zvinhu, zvinosanganisira:
1. Kuratidzira kwe resonator: Kuti uve nechokwadi chekuti mamwe mafotoni anowanikwa munzvimbo kuti agadzire yakagadzikana oscillations mugomba uye kugadzira.laser chiedza, chiso chekupedzisira che resonator chinowanzoputirwa nefirimu yekuratidzira yakasimbiswa. Zvinoenderana nemutemo weFresnel, kuita kweiyo multilayer inoratidzira firimu inoita kuti mwenje wekupedzisira unoratidzwa uchinje kubva kuchiedza chechisikigo kuenda kune mutsara.polarized light.
2. Hunhu hwekuwana svikiro: Laser chizvarwa chakavakirwa pamhepo yakakurudzirwa. Kana maatomu anofara anopenya mafotoni pasi pekunakidzwa kwemafotoni ekunze, mafotoni aya anozunguzika achienda kwaakananga (polarization state) semafotoni ekunze, achibvumira laser kuchengetedza yakagadzikana uye yakasarudzika mamiriro epolarization. Kunyangwe shanduko diki mu polarization state ichasefa kunze ne resonator nekuti yakagadzikana oscillations haigone kuumbwa.
Mune chaiyo laser yekugadzira maitiro, iyo wave plate uye polarization crystal inowanzowedzerwa mukati meiyo laser kugadzirisa iyo kugadzikana mamiriro eiyo resonator, kuitira kuti iyo polarization mamiriro mumhango yakasarudzika. Izvi hazvingoite kuti simba relaser riwedzere kunyura, iko kusimudzira kwekusimudzira kwakakwira, asi zvakare inodzivirira kurasikirwa kunokonzerwa nekusakwanisa kutenderera. Naizvozvo, iyo polarization mamiriro eiyo laser anoenderana nezvakawanda zvinhu zvakaita sechimiro cheiyo resonator, hunhu hwepakati pekuwana uye oscillation mamiriro, uye haisi yega yega.
Nguva yekutumira: Jun-17-2024