论文标题
指导模式共振滤波器扩展腔二极管激光器
Guided-mode resonance filter extended-cavity diode laser
论文作者
论文摘要
我们表征了半导体外部空腔二极管激光器，其光学反馈由引导模式共振滤波器（GMRF）提供。我们专注于光谱特性。操作的波长落在电信范围内（1506 nm）。 GMRF既充当波长腔内过滤器和反馈镜，都可以进行紧凑的激光设计。单模操作在广泛的驱动电流中得到验证。我们对空腔长度进行细微调整，以将频率调整为14 GHz，而无需模式与谐振器$ \ sim $ 20 GHz的预期自由光谱范围一致。腔的紧凑性可以在调节电流时（90 MHz/mA 100 kHz，调制带宽）时快速扫描。还分析了频率噪声（366 kHz白噪声贡献），以评估我们设计对高分辨率应用的潜力。
We characterize a semiconductor external cavity diode laser whose optical feedback is provided by a guided mode resonance filter (GMRF). We focus on the spectral properties. The wavelength of operation falls in the telecom range (1506 nm). The GMRF acting both as a wavelength intracavity filter and feedback mirror allows for a compact laser design. The single-mode operation is verified in a wide range of driving currents. We finely tune the cavity length to adjust the frequency by 14 GHz without mode-hops in agreement with the expected free-spectral range of the resonator $\sim$20 GHz. The compactness of the cavity allows fast frequency sweeps when modulating the current (90 MHz/mA at 100 kHz, the modulation bandwidth). The frequency noise (366 kHz white-noise contribution) is also analysed to evaluate the potential of our design for high-resolution applications.
