PDH

Pound-Drever-Hall module

The Pound-Drever-Hall detector PDH is a built-in module of the DLC pro and serves to lock a diode laser to a maximum absorption or transmission of a reference medium (e.g. an optical resonator). The PDH features an internal HF modulation source for modulating the diode laser frequency. The signal from the reference is detected and demodulated phase sensitively to produce a high bandwidth dispersive error signal that can be used to lock the laser using a PID controller.

Your Benefits

Ultra-stable laser locking with high bandwidth

The PDH module generates a high-bandwidth dispersive error signal, enabling precise top-of-fringe locking to a cavity or reference medium. This ensures reliable, drift-free laser operation, e.g. for high-resolution spectroscopy, precision metrology, and quantum optics setups.

Fast lock acquisition and robust operation

The industry-proven PDH technique is ideal for laser stabilization even under fluctuating environmental conditions.

Fully integrated inside the DLC pro

Ready to use with internal HF modulation source, two channels, and switchable modulation frequency (5 MHz or 25 MHz). Seamlessly ingetrated in the popular DLC pro digital laser controller.

Applications

センシング & 分光

光は他のツールでは明らかにできないものを明らかにします。それは私たちを取り巻く世界の構造、組成、そしてダイナミクスです。センシングや分光分析においてレーザーは想像を絶するほど精密な物差しや時計として機能します。そのスペクトル純度、可変性、そして超高速タイミングは、基礎材料研究から産業用ガスモニタリング、次世代通信研究に至るまで幅広い用途に不可欠なものです。