
德国Bernhard Halle Nachfl GmbH 光学缓速器 延迟器 延迟片 波片 消色差延迟器 RAC 1.2.10L RAC 6.2.10
延迟器
Δ = 2πR/λ = 2πd • µ/λ
因为已知R的值为λ0/2 bzw。λ0/4在设计波长这允许很好的估计光谱变化Δ。 根据温度 路径差随着温度的变化而变化。缓凝剂通常是在室温下生产的。如果温度变化δT不是太大,可以假定路径差的线性变化。温度系数α由热膨胀系数和双折射的热系数组成:R=R0+α•δT
根据角度R = R0+β(φe2 - φo2)
该图描述了一个典型的零或板的变化R-R0 (β ~ 1nm/deg2)。大多数类型的智力迟钝表现出类似的模式,不同的β值。主轴之间对角线的倾斜使路径差几乎不变。超消色差板和菲涅耳菱形在倾斜下表现出不同的行为。消色差延迟器
消色差延迟器规格
material | quartz and MgF2 |
wavefront distortion | <λ/10 |
prismatic deviation | <2'' (air gap), <1' (gekittet) |
marked direction | fast axis |
tolerance of the path difference | ±3 nm |
Format | 10 mm | 15 mm | 20 mm | 25 mm | |
free aperture | [mm] | 9,5 | 14,5 | 19,5 | 24,5 |
mount diameter | [mm] | 25 | 25 | 30 | 40 |
mount length | [mm] | 10 | 10 | 10 | 15 |
Art. Nr.:, all ranges λ/2 | RAC X.2.10 | RAC X.2.15 | RAC X.2.20 | RAC X.2.25 | |
Art. Nr.:, all ranges λ/4 | RAC X.4.10 | RAC X.4.15 | RAC X.4.20 | RAC X.4.25 | |
Art. Nr.:, all ranges λ/2 air gap | RAC X.2.10 L | RAC X.2.15 L | RAC X.2.20 L | RAC X.2.25 L | |
Art. Nr.:, all ranges λ/4 air gap | RAC X.4.10 L | RAC X.4.15 L | RAC X.4.20 L | RAC X.4.25 L |
spectral range 1 | 180-300 nm |
deviation of retardation | ± 8,5% |
number of plates | 4 |
reflectivity | quartz: <2% MgF2: <3% |
temperature coefficient* α(typ.) | λ/2: 2∙10-3nm/K λ/4:1∙10-3 nm/K |
angular coefficient* ß (typ.) | 2,5 nm/deg² |
GDD (λ=266 nm) | 500 fs² |
spectral range 6 | 700-2500 nm |
deviation of retardation | ± 4% |
number of plates | 2 |
reflectivity | <2% |
temperature coefficient* α(typ.) | λ/2: 0,6 nm/K λ/4: 0,3nm/K |
angular coefficient* ß (typ.) | λ/2: 1,9 nm/deg² λ/4:0,9 nm/deg² |
GDD (λ=1550 nm) | λ/2: -59 fs² λ/4: -29 fs² |
询价采购德国Bernhard Halle Nachfl GmbH 光学缓速器 延迟器 延迟片 波片 消色差延迟器 RAC 1.2.10L RAC 6.2.10
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