论文标题
旋转的the骨体积bragg thrings用于紧凑的光谱分析
Rotated chirped volume Bragg gratings for compact spectral analysis
论文作者
论文摘要
我们引入了一个新的光学组件 - 旋转的the骨体积bragg光栅（R -CBG） - 在空间上可以在紧凑的足迹中解决正常入射光束的光谱，而无需随后的自由空间传播或准直。与传统的chir thed bragg体积光栅不同，必须增加设备的长度和宽度以增加带宽，通过旋转bragg结构，我们切断了R-CBG的长度和宽度之间的链接，从而导致同一带宽的设备足迹显着降低。我们在多个光谱窗口中制造和表征这种设备，研究其光谱分辨率，并确认一对级联的R-CBG可以解决，然后重新组合光谱。这样的设备可以导致超紧凑型光谱仪和脉冲调节器。
We introduce a new optical component - a rotated chirped volume Bragg grating (r-CBG) - that spatially resolves the spectrum of a normally incident light beam in a compact footprint and without the need for subsequent free-space propagation or collimation. Unlike conventional chirped Bragg volume gratings in which both the length and width of the device must be increased to increase the bandwidth, by rotating the Bragg structure we sever the link between the length and width of an r-CBG, leading to a significantly reduced device footprint for the same bandwidth. We fabricate and characterize such a device in multiple spectral windows, we study its spectral resolution, and confirm that a pair of cascaded r-CBGs can resolve and then recombine the spectrum. Such a device can lead to ultra-compact spectrometers and pulse modulators.
