Video: Dab tsi yog siv ntawm ib nrab yoj phaj?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A ib nrab - phaj phaj yog siv raws li polarization rotator, tig lub polarization ncig lub nrawm axis. Quartz yog qhov feem ntau siv cov ntaub ntawv retarder.
Hauv qhov no, ib nrab phaj phaj ua dab tsi?
Ob hom sib txawv ntawm cov ntawv xov tooj cua yog ib nrab - phaj phaj , uas hloov cov kev taw qhia polarization ntawm linearly polarized lub teeb, thiab peb lub hlis twg- phaj phaj , uas hloov cov teeb pom kev ncaj qha mus rau hauv lub teeb pom kev ncig thiab hloov pauv. Peb lub hlis twg- phaj phaj tuaj yeem siv los tsim elliptical polarization ib yam.
Ib sab saum toj no, lub phaj yoj lub hlis twg ua haujlwm li cas? A peb lub hlis twg - phaj phaj muaj qhov ua tib zoo kho cov tuab ntawm cov khoom siv birefringent xws li lub teeb cuam tshuam nrog qhov ntsuas loj dua ntawm qhov cuam tshuam yog retarded los ntawm 90 ° nyob rau theem (a lub quarter wavelength ) nrog kev hwm rau qhov cuam tshuam nrog qhov ntsuas me me. Qhov no muab qhov sib npaug amplitude o- thiab e- nthwv dej.
Ib sab ntawm no, koj txhais li cas los ntawm ib nrab phaj phaj?
Txhais ntawm ib nrab - phaj phaj .: siv lead ua phaj uas txo los ntawm cycle/2 voj voog theem sib txawv ntawm ob qhov sib xyaw ntawm lub teeb pom kev zoo hla nws - sib piv peb lub hlis twg - phaj phaj.
Dab tsi yog cov ntaub ntawv retarding?
Optical waveplates (tseem hu ua nthwv dej daim hlau los yog daim hlau retarder ) yog pob tshab daim hlau nrog ua tib zoo xaiv tus nqi birefringence. Lawv feem ntau yog siv rau kev tswj hwm lub xeev polarization ntawm kab teeb.
Pom zoo:
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