Dieulangard Anthony, Kastelik Jean-Claude, Dupont Samuel, Gazalet Joseph
Appl Opt. 2013 Nov 20;52(33):8134-41. doi: 10.1364/AO.52.008134.
A wide bandwidth tunable optical low-frequency shifter is presented in this work. It is based on two acousto-optic devices operating in tandem. The relevant parameters of the specific configurations of acousto-optic interactions in paratellurite material are detailed. Results from numerical computations leading to the practical design parameters are given. The low-frequency shifter has been experimentally tested at a visible wavelength λ₀=514 nm and a high efficiency (>60%) has been measured. The tuning capability of the optical shifter covers a bandwidth Δf=26 MHz.
本文介绍了一种宽带可调谐光学低频移频器。它基于两个串联运行的声光器件。详细阐述了亚碲酸盐材料中声光相互作用特定配置的相关参数。给出了导致实际设计参数的数值计算结果。该低频移频器已在可见光波长λ₀ = 514 nm下进行了实验测试，并测得高效率（>60%）。该光学移频器的调谐能力覆盖带宽Δf = 26 MHz。
