Zero order plates are formed from two thin sections which are polished to different thicknesses to have retardation difference exactly equal to the required. These component plates have orthogonal optic axis directions, so that the roles of the ordinary and extraordinary rays are interchanged in passing from one plate to the other. Retardation error versus wavelength is reduced therefore they are very useful for dye laser or laser diode application.

Eksma retardation plates are supplied mounted and have multilayer dielectric anti-reflection coating on both sides maximising transmission.

性能指标

材料	单晶
光轴	normal to facet on circumference of retarder
同光孔径	17 mm 直径20mm(可选择其他尺寸)
外径	25.4 (或25.0) +0.0, -0.12 mm
波片公称厚度	1.5÷2.5 mm
波阵面失真	λ/10 @ 633 nm
平行度	< 10 arcsec
AR 镀膜	R < 0.4%

λ /2

目录号	波长, nm
460-4205	1064
460-4210	950
460-4215	800
460-4220	780
460-4225	633
460-4230	532
460-4235	400
460-4240	355
460-4245	266

λ /4

目录号	波长, nm
460-4405	1064
460-4410	950
460-4415	800
460-4420	780
460-4425	633
460-4430	532
460-4435	400
460-4440	355
460-4445	266

如果您需要其他尺寸、波长、的低阶平片或有其他具体要求，请联系欧兰

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