Unidirectional single-frequency operation of a continuous-wave Alexandrite ring laser with wavelength tunability

Sheng, Xin, Tawy, Goronwy, Sathian, Juna, Minassian, Ara and Damzen, Michael J. (2018) Unidirectional single-frequency operation of a continuous-wave Alexandrite ring laser with wavelength tunability. Optics Express, 26 (24). p. 31129. ISSN 1094-4087

[img]
Preview
Text
oe-26-24-31129.pdf - Published Version
Available under License Creative Commons Attribution 4.0.

Download (2MB) | Preview
Official URL: https://doi.org/10.1364/OE.26.031129

Abstract

High resolution spectroscopy, metrology and quantum technologies (e.g. trapping and cooling) require precision laser sources with narrow linewidth and wavelength tunability. The widespread use of these lasers will be promoted if they are cost-effective, compact and efficient. Alexandrite lasers with a broad tuning band pumped efficiently by low-cost red diodes are a potential candidate, but full performance as a precision light source has not been fully achieved. We present in this work the first continuous-wave (CW) and single-frequency operation of a unidirectional diode-end-pumped Alexandrite ring laser with wavelength tunability. An ultra-compact bow-tie ring cavity is developed with astigmatic compensation and a novel ‘displaced mode’ design producing CW output power > 1 W in excellent TEM00 mode (M2 < 1.2) when using a low brightness pump (M2 ≥ 30). Wavelength tuning from 727 - 792 nm is demonstrated using a birefringent filter plate. This successful operation opens the prospects of precision light source applications.

Item Type: Article
Subjects: F300 Physics
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 30 Jul 2019 08:38
Last Modified: 11 Oct 2019 10:09
URI: http://nrl.northumbria.ac.uk/id/eprint/40199

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics