Picture of virus under microscope

Research under the microscope...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

Explore SIPBS research

Development of a nanosecond high energy KTA OPO operating at 2.9um

Vysniauskas, G. and Burns, D. and Bente, E.A.J.M. and Valentine, G.J. (2002) Development of a nanosecond high energy KTA OPO operating at 2.9um. In: Lasers and Electro-Optics, 2002. CLEO '02, 2002-01-01.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Summary form only given. We present the development of a KTA singly resonant optical parametric oscillator (OPO) with an unstable resonator. The OPO was pumped by a standard lamp-pumped, Q-switched, Nd:YAG laser (Continuum Surelight I) with 450 mJ output pulse energy in 5 ns pulses and 10 Hz repetition rate. The OPO was singly resonant for the idler wavelength, had an unstable resonator and was designed for optimal idler output energy of 30 mJ at 2.9 μm while minimising the linewidth of the free running OPO. The main reasons for choosing KTA were: low crystal loss in the wavelength range 2.6-3.2 μm; high non-linear coefficient; high optical damage threshold; low temperature sensitivity. KTA is also non-hygroscopic, and offers the possibility of critical phase matching with a high value of dλ/dθ which results in a narrow free running linewidth. The OPO system had a flexible design geometry incorporating the potential for both single- and double-pass of the pump beam through the 15 mm KTA crystal.