Time-resolved thermally induced aberrations in a flash-lamp pumped Nd:Glass disk amplifier using a 2 × 2 position sensitive detector array

M Ahmad; M Galletti; P Oliveira; E Dilworth; D J Robinson; M Galimberti; A J Crawford; I Musgrave; M J D Esser

doi:10.1063/1.5120388

Time-resolved thermally induced aberrations in a flash-lamp pumped Nd:Glass disk amplifier using a 2 × 2 position sensitive detector array

Rev Sci Instrum. 2019 Dec 1;90(12):123106. doi: 10.1063/1.5120388.

Authors

M Ahmad¹, M Galletti², P Oliveira², E Dilworth², D J Robinson², M Galimberti², A J Crawford³, I Musgrave², M J D Esser¹

Affiliations

¹ School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
² Central Laser Facility, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, United Kingdom.
³ Université Bordeaux 1, Département de Physique, 351 Cours de la Libération, 33400 Talence, France.

PMID: 31893799
DOI: 10.1063/1.5120388

Abstract

A novel technique of measuring the prompt, thermally induced wave-front aberrations in a large aperture flash-lamp pumped Nd³⁺ glass disk amplifier is presented. Implementing a 2 × 2 lens array and a 2 × 2 position sensitive detector array as a diagnostic system, the wave-front profile was successfully reconstructed for the first five Zernike terms for a temporal window of 8.5 ms.