从单片被动锁模半导体量子阱激光器发射出的1.8太赫兹宽光学频率梳。

1.8-THz-wide optical frequency comb emitted from monolithic passively mode-locked semiconductor quantum-well laser.

作者信息

Lo Mu-Chieh, Guzmán Robinson, Ali Muhsin, Santos Rui, Augustin Luc, Carpintero Guillermo

出版信息

Opt Lett. 2017 Oct 1;42(19):3872-3875. doi: 10.1364/OL.42.003872.

DOI:10.1364/OL.42.003872

Abstract

We report on an optical frequency comb with 14 nm (∼1.8 THz) spectral bandwidth at a -3 dB level that is generated using a passively mode-locked quantum-well laser in photonic integrated circuits fabricated through an InP generic photonic integration technology platform. This 21.5-GHz colliding-pulse mode-locked laser cavity is defined by on-chip reflectors incorporating intracavity phase modulators followed by an extracavity semiconductor optical amplifier as a booster amplifier. A 1.8-THz-wide optical comb spectrum is presented with an ultrafast pulse that is 0.35 ps wide. The radio frequency beat note has a 3-dB linewidth of 450 kHz and 35-dB SNR.

摘要

我们报道了一种在 -3 dB 水平下具有 14 nm（约 1.8 THz）光谱带宽的光学频率梳，它是通过 InP 通用光子集成技术平台制造的光子集成电路中的被动锁模量子阱激光器产生的。这个 21.5 GHz 的碰撞脉冲锁模激光腔由包含腔内相位调制器的片上反射器定义，随后是一个作为增强放大器的腔外半导体光放大器。呈现出一个 1.8 THz 宽的光学梳状光谱，其超快脉冲宽度为 0.35 ps。射频拍频的 3 dB 线宽为 450 kHz，信噪比为 35 dB。