"Polarization" waa sifo caan ah oo ka mid ah laysarka kala duwan, kaas oo lagu go'aamiyo mabda'a samaynta ee laser-ka. Thelaydhka laysarkawaxaa soo saara shucaaca la kiciyay ee qaybaha dhexe ee iftiiminaya gudaha gudahaleysarka. Shucaaca la kiciyey waxa uu leeyahay sifo cajiib ah: marka photon dibadda ahi uu ku dhufto qayb ka mid ah tamarta sare, qaybtu waxa ay dhalisaa photon oo u gudubta xaalad tamar hoose. Sawir-qaadayaasha lagu soo saaray habkan waxay leeyihiin weji isku mid ah, jihada faafinta iyo xaaladda polarization-ka sida sawir-qaadayaasha shisheeye. Marka qulqulka sawir-qaadista lagu sameeyo leysarka, dhammaan sawir-qaadayaasha ku jira qaab-socodka photon-ka waxay wadaagaan isla weji, jihada faafinta, iyo xaaladda polarization. Sidaa darteed, habka dhererka leysarka (frequency) waa in uu noqdaa mid isku xiran.
Ma aha dhammaan lasers-ka oo dhan. Xaaladda laysarka ee laysarka waxaa saameeya dhowr arrimood, oo ay ka mid yihiin:
1. Milicsiga resonator-ka: Si loo hubiyo in sawir-qaadayaal badan la meel-mariyey si ay u sameeyaan gariir xasilloon oo godka oo ay abuuraaniftiinka laysarka, wejiga dhamaadka resonator-ka waxaa inta badan lagu dhejiyaa filim milicsi oo la xoojiyay. Marka loo eego sharciga Fresnel, ficilka filimka milicsiga badan leh wuxuu keenaa iftiinka u dambeeya inuu ka beddelo iftiinka dabiiciga ah una beddelo si toos ah.iftiinka kala-baxsan.
2. Sifooyinka dhexdhexaadka ah ee faa'iidada: jiilka laysarka wuxuu ku salaysan yahay shucaac la kiciyey. Marka atomamka xiisaha leh ay ka soo dhalaalaan sawir-qaadayaasha hoos yimaada kicinta sawir-qaadista ajnabiga ah, sawir-qaadayaashani waxay u gariiraan isla jihada (state polarization) sida sawir-qaadista shisheeye, taas oo u oggolaanaysa laysarka inuu ilaaliyo xaalad xasilloon oo gaar ah. Xitaa isbeddelada yaryar ee gobolka polarization-ka waxaa sifeyn doona resonator sababtoo ah mawjado deggan lama samayn karo.
Habka wax soo saarka laser-ka dhabta ah, saxanka mawjada iyo kiristaanka polarization ayaa inta badan lagu daraa gudaha laysarka si loo hagaajiyo xaaladda xasiloonida resonator-ka, si gobolka polarization ee daloolka uu yahay mid gaar ah. Tani ma aha oo kaliya ka dhigaysa tamarta laysarka oo badan, waxtarka kicinta ayaa sarreeya, laakiin sidoo kale waxay ka fogaanaysaa khasaaraha ay sababto awood la'aanta in uu ku wareego. Sidaa darteed, xaaladda polarization ee laysarka waxay ku xiran tahay arrimo badan sida qaab-dhismeedka resonator, dabeecadda dhexdhexaadka ah ee faa'iidada iyo xaaladaha oscilation, oo had iyo jeer ma aha mid gaar ah.
Waqtiga boostada: Juun-17-2024