Long-Sheng Ma

TL;DR: A simple double-pass fiber noise measurement and control system is described, which is demonstrated to provide millihertz accuracy of noise cancellation.

TL;DR: In this paper, an external cavity is used to enhance the molecular response to the light field, and an external FM technique is applied for shotnoise-limited signal recovery, and a perfect match between the FM sideband frequency and the cavity free spectral range makes the detection process insensitive to the laser-frequency noise relative to the cavity, and, at the same time, overcomes the cavity bandwidth limit.

TL;DR: A coherently synthesized optical pulse is generated from two independent mode-locked femtosecond lasers, providing a route to extend the coherent bandwidth available for ultrafast science and represents a new and flexible approach to the synthesis of coherent light.

TL;DR: An improved mounting configuration for a passive optical cavity used for laser frequency stabilization with associated reduction of the vibration sensitivity of the effective cavity length has led to a simple and compact reference cavity system for laser stabilization at the level of 1 Hz linewidth.

TL;DR: In this article, the authors used a weakly absorbing gas such as C2H2 or C2HD placed inside an external high-finesse resonator to obtain an integrated absorption sensitivity of 5×10-13(1×10−14/cm) for the gas's weak near-IR molecular overtone transitions.