Window Brewster na-enweghị mfu echiche nke P-Polarization
A na-ejikarị windo Brewster eme ihe dị ka polarizers n'ime oghere laser. Mgbe etinyere ya na akụkụ Brewster (55° 32′ na 633 nm), akụkụ P-polarized nke ọkụ ahụ ga-agafe na windo na-enweghị mfu, ebe obere akụkụ nke S-polarized ga-egosipụta na windo Brewster. Mgbe ejiri ya na oghere laser, windo Brewster na-arụ ọrụ dị ka polarizer.
Enyere akụkụ Brewster site na
tan (θB) = nt/ni
θBbụ akụkụ Brewster
nibụ index nke refraction nke ihe merenụ, nke bụ 1.0003 maka ikuku
ntbụ index nke refraction nke mgbasa ozi, nke bụ 1.45701 maka fused silica na 633 nm.
Paralight Optics na-enye windo Brewster sitere na N-BK7 (Grade A) ma ọ bụ UV fused silica, nke na-egosipụta ihe fọrọ nke nta ka ọ bụrụ fluorescence na-akpata laser (dị ka a tụrụ na 193 nm), na-eme ka ọ bụrụ ezigbo nhọrọ maka ngwa sitere na UV ruo IR dị nso. . Biko hụ ihe eserese na-egosi ntule maka ma S- na P-polarization site na silica fused UV na 633 nm maka ntụaka gị.
Atụmatụ:
Ihe:
N-BK7 ma ọ bụ UV Fused Silica Substrate
Nnwale nha nke mmebi laser:
Oke mmebi dị elu (Enweghị mkpuchi)
Arụmọrụ anya:
Ọnwụ ntụgharị uche efu maka P-Polarization, 20% Ntugharị maka S-Polarization
Ngwa:
Kwesịrị ekwesị maka Cavities Laser
Nkọwapụtakarị:
Ntụaka maka
Window Brewster
Eserese ntụaka aka ekpe na-egosi ntule nke ìhè S-polarized na nnyefe nke ìhè P-polarized site na windo Brewster. A ga-ebunye ụfọdụ ọkụ S-polarized site na windo.
Oke
Oke & ndidi
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Ihe eji eme ihe
N-BK7 (Ọkwa A), UV fused silica
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Ụdị
Window Laser dị larịị ma ọ bụ wedged (gburugburu, square, wdg)
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Nha
Emebere nkeonwe
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Nkwenye nha nha
Ụdị: +0.00/-0.20mm | Nkenkenke: +0.00/-0.10mm
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Ọkpụrụkpụ
Emebere nkeonwe
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Ọkpụrụkpụ ndidi
Ụdị: +/- 0.20mm | Nkenkenke: +/-0.10mm
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Kpochapụ oghere
> 90%
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Myirịta
Nkenkenke: ≤10 arcsec | Oke nkenke: ≤5 arcs
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Ogo elu (nyocha - igwu)
Nkọwapụta: 60 - 40 | Elu nkenke: 20-10
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Ọdịmma dị elu @ 633 nm
Nkenkenke: ≤ λ/10 | Oke nkenke: ≤ λ/20
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Njehie ihu Wave ebutere
≤ λ/10 @ 632.8 nm
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Chamfer
Echedoro:<0.5mm x 45°
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Mkpuchi
Ekpuchibeghị
-
Ogologo ogologo ogologo
185-2100 nm
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Oke mmebi nke laser
> 20 J/cm2(20ns, 20Hz, @1064nm)
Eserese
♦ Eserese dị n'aka nri na-egosi nlebara anya gbakọọ nke silica fused UV na-enweghị mkpuchi maka ọkụ ọkụ n'akụkụ dị iche iche nke ihe omume (Ngosipụta maka ìhè P-polarized na-aga na efu na akụkụ Brewster).
♦ Ndekọ nke refraction nke UV fused silica dịgasị iche na ogologo ogologo nke egosiri na eserese aka ekpe na-esote (ntụgharị aka gbakọọ nke refraction nke UV fused silica dị ka ọrụ nke ogologo ogologo site na 200 nm ruo 2.2 μm).
♦ Eserese aka nri na-esonụ na-egosi uru gbakọọ nke θB (Brewster's angle) dị ka ọrụ nke wavelength site na 200 nm ruo 2.2 μm mgbe ìhè na-esi na ikuku na-agafe na UV fused silica.
Index nke ntugharị bụ dabere wavelength dabere
