采用简单激光二极管的快速无模式跳变声光调谐激光器。

Fast mode-hop-free acousto-optically tuned laser with a simple laser diode.

作者信息

Bösel André, Salewski Klaus-Dieter, Kinder Thomas

机构信息

Institut für Physik, E.-M.-Arndt-Universität Greifwald, Felix-Hausdorff-Strasse 6, D-17487 Greifswald, Germany.

出版信息

Opt Lett. 2007 Jul 1;32(13):1956-8. doi: 10.1364/ol.32.001956.

DOI:10.1364/ol.32.001956

PMID:17603626

Abstract

A mode-hop-free tunable external-cavity Littrow diode laser with intracavity acousto-optic modulators (AOMs) has been built. The modes of the red laser diode without a special antireflection coating are shifted by varying the injection current. The external resonator modes and the grating selectivity are independently electrically alterable by two AOMs. Thus, a tuning of the external resonator over up to 1900 GHz is possible. A precise computer control of laser diode and AOMs allowed a single-mode tuning of the whole laser with a tuning range of 225 GHz in 250 s. Additionally, we demonstrated fast tuning over 90 GHz in 190 micros and a repetition rate of 2.5 kHz.

摘要

已搭建了一种带有腔内声光调制器（AOM）的无模式跳变可调谐外腔利特罗二极管激光器。未采用特殊抗反射涂层的红色激光二极管的模式通过改变注入电流来进行偏移。两个AOM可独立地对外部谐振器模式和光栅选择性进行电调节。因此，外腔的调谐范围可达1900 GHz。对激光二极管和AOM进行精确的计算机控制，可在250秒内对整个激光器进行单模调谐，调谐范围为225 GHz。此外，我们还展示了在190微秒内实现90 GHz的快速调谐以及2.5 kHz的重复频率。