Low-aberration high-speed-compatible optical delay line.
Low-aberration high-speed-compatible optical delay line.
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DOI：
10.1364/ol.397314
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发表时间：
2020-07-01
期刊：
影响因子：
3.6
通讯作者：
Cicerone MT
中科院分区：
文献类型：
--
作者：
Audier X;Chen WW;Cicerone MT
我们描述了一种简单的方法来设计无色散的光学延迟线，在扩展的延迟范围内提供非常低的像差。在这种方法中，我们通过引导非轴向光束位移沿着对称线内置到设备中来最小化像差。我们通过比较模拟和实验结果与一个类似的延迟线，缺乏这条线的对称性，提高了性能和波前像差的显着减少。新的设计有利于傅里叶变换相干反斯托克斯拉曼散射的光谱分辨率的变换限制恢复，因此，我们证明了3.5 cm−1的光谱分辨率与10 ps的延迟扫描范围。
We describe a simple approach to dispersion-free optical delay line design that provides very low aberration over an extended delay range. In this approach, we minimize aberrations by directing non-axial beam displacements along a line of symmetry built into the apparatus. We show improved performance and significant reduction of wavefront aberrations by comparing simulation and experimental results with a similar delay line that lacks this line of symmetry. The new design facilitates transform-limited recovery of spectral resolution in Fourier transform coherent anti-Stokes Raman scattering, and accordingly, we demonstrate 3.5 cm−1 spectral resolution with a 10 ps delay scan range.