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Achromatic linear retarder with tunable retardance

机译:具有可调谐延迟的消色差线性延迟器

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We present a universal design and proof-of-concept of a tunable linear retarder of uniform wavelength response in a broad spectral range. It consists of two half-wave retarders (HWR) between two quarter-wave retarders (QWRs), where the uniform retardance can be tuned continuously by simply rotating one of the HWRs. A proof-of-concept of this design is built by using commercially available Fresnel rhomb retarders that provide retardation with almost wavelength uniformity in the visible and near infrared from 450 to 1550 nm. The design is universal, since other achromatic QWRs and HWRs could also be employed. The system is experimentally demonstrated to control the state of polarization of a supercontinuum laser. (c) 2018 Optical Society of America
机译:我们在广谱范围内提出了一种通用的设计和可调谐线性延迟器的概念,在广谱范围内均匀波长响应。 它由两个四分之一波延迟器(QWR)之间的两个半波延迟器(HWR)组成,其中通过简单地旋转其中一个HWR可以连续地调谐均匀延迟。 这种设计的概念概念是通过使用市售的菲涅耳菱形延迟器来构建,该菲涅耳菱形延迟器通过450至1550nm的可见光和近红外线的几乎波长均匀性提供延迟。 设计是普遍的,因为也可以采用其他消色差QWR和HWR。 实验证明系统以控制超连续激光的偏振状态。 (c)2018年光学学会

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