XAV PHAJ
Ib nthwv dej phaj, tseem hu ua theem retarder, yog cov khoom siv kho qhov muag uas hloov pauv qhov polarization xeev ntawm lub teeb los ntawm kev ua kom muaj txoj kev kho qhov muag sib txawv (lossis theem sib txawv) ntawm ob qho kev sib xyaw orthogonal polarization Cheebtsam. Thaum qhov xwm txheej teeb dhau los ntawm cov nthwv dej nrog ntau yam ntawm qhov ntsuas, qhov tawm ntawm lub teeb tawm yog qhov sib txawv, uas tej zaum yuav yog kab txaij polarized lub teeb, elliptically polarized lub teeb, lub voj voog polarized lub teeb, thiab lwm yam. ntawm nthwv dej phaj.
Cov phaj yoj feem ntau yog ua los ntawm cov khoom siv birefringent nrog qhov tuab zoo xws li quartz, calcite lossis mica, uas nws cov axis kho qhov muag tau zoo tib yam rau wafer nto. Txheem nthwv dej daim hlau (suav nrog λ / 2 thiab wave / 4 nthwv daim hlau) yog ua raws cov cua ntxig tsim uas tso cai rau lawv siv rau kev siv hluav taws xob siab nrog kev puas tsuaj siab tshaj 10 J / cm² rau 20 ns pulses ntawm 1064 nm.
Ib Nrab (λ / 2) Wave Plate
Tom qab dhau ntawm the / 2 yoj lub phaj, cov kab txaij polarized lub teeb tseem muaj qhov sib txig sib txawv, txawm li cas los xij, muaj lub kaum sab xis sib txawv (2θ) ntawm lub dav hlau kev co ntawm kev sib xyaw ua ke thiab lub dav hlau kev co ntawm qhov xwm txheej polarized teeb. Yog tias θ = 45 °, lub dav hlau kev co ntawm lub teeb tawm sab nraud yog sib piv rau lub dav hlau kev co ntawm qhov xwm txheej teeb, uas yog, thaum θ = 45 °, the / 2 nthwv dej phaj tuaj yeem hloov lub xeev polarization los ntawm 90 °.
Lub Plaub Hlis (λ / 4) Wave Plate
Thaum lub kaum sab xis nruab nrab ntawm qhov teeb meem kev co dav hlau ntawm lub teeb pom kev zoo thiab lub teeb pom kev zoo ntawm lub nthwv dej yoj cua yog θ = 45 °, lub teeb ci dhau ntawm the / 4 nthwv dej phaj yog polarized. Txwv tsis pub, tom qab dhau los ntawm the / 4 nthwv phaj, ib puag ncig polarized lub teeb yuav raug txiav tawm. A λ / 4 yoj lub phaj muaj cov sib npaug nrog a / 2 nthwv phaj thaum nws tso cai rau lub teeb kom dhau los ob zaug.
WISOPTIC Cov Lus Qhia Tshwj Xeeb - Cov Phiaj Dav Hlau
| Txuj Ci | Siab Tshaj Plaws | ||
| Cov khoom siv | Laser-qib crystalline quartz | ||
| Txoj kab uas hla kam | + 0.0 / -0.2 hli | + 0.0 / -0.15 hli | |
| Kev pauj chim kev pheej hmoo | Λ λ / 200 | ± λ / 300 | |
| Ntshiab Aperture | > 90% ntawm qhov chaw nruab nrab | ||
| Deg Zoo [S / D] | <20/10 [S / D] | <10/5 [S / D] | |
| Kis Tau Hloov Wavefront Kev Ntxeev Siab | / 8 @ 632,8 nm | / 10 @ 632,8 nm | |
| Parallelism (ib phaj) | ≤ 3 ” | ”1” | |
| Kev Txheej Txheem | R ＜ 0.2% ntawm lub hauv ntej yoj | ||
| Laser ua kev ceeb toom txog kev puas tsuaj | 10 J / cm² @ 1064 nm, 10 ns, 10 Hz | ||
