The University of Southampton
University of Southampton Institutional Repository

A pulsed guide star laser can be the brightest

A pulsed guide star laser can be the brightest
A pulsed guide star laser can be the brightest
We report on a numerical model and supporting experiments to show that a high peak power, pulse burst, Na guide-star waveform, suitable for use with adaptive optics systems requiring dynamic refocusing to avoid guide star elongation, is capable of producing a return comparable to conventional guide star laser of comparable output power. The predictions from our numerical model using coherent pumping by short, high peak power pulses, or so-called π-pulse pumping, indicate that very bright fluorescence returns can be achieved in this regime. This is supported by experimental results where fluorescence is observed in alkali atoms (cesium) using variable input power and pulse lengths. The model is used to predict very bright Na guide stars, using short pulses to excite most of the Na atoms available, followed by sufficient time to let them decay.
Guide star laser, high peak power, adaptive optics, dynamic refocusing, macro-micro pulse-burst
0277-786X
Simakov, Nikita
984eef10-d13b-4cc6-852f-bcc58b432832
Hamilton, Murray
9270616b-a8be-40b2-b115-15e0e34cf2ba
Veitch, Peter J.
681fde4a-f1ba-4c15-9783-48ea035d749d
Munch, Jesper
89d00041-4c3c-4ba6-a128-1bb21e0d1ee5
Simakov, Nikita
984eef10-d13b-4cc6-852f-bcc58b432832
Hamilton, Murray
9270616b-a8be-40b2-b115-15e0e34cf2ba
Veitch, Peter J.
681fde4a-f1ba-4c15-9783-48ea035d749d
Munch, Jesper
89d00041-4c3c-4ba6-a128-1bb21e0d1ee5

Simakov, Nikita, Hamilton, Murray, Veitch, Peter J. and Munch, Jesper (2010) A pulsed guide star laser can be the brightest. Proceedings of SPIE, 7736, [77364Z]. (doi:10.1117/12.857002).

Record type: Article

Abstract

We report on a numerical model and supporting experiments to show that a high peak power, pulse burst, Na guide-star waveform, suitable for use with adaptive optics systems requiring dynamic refocusing to avoid guide star elongation, is capable of producing a return comparable to conventional guide star laser of comparable output power. The predictions from our numerical model using coherent pumping by short, high peak power pulses, or so-called π-pulse pumping, indicate that very bright fluorescence returns can be achieved in this regime. This is supported by experimental results where fluorescence is observed in alkali atoms (cesium) using variable input power and pulse lengths. The model is used to predict very bright Na guide stars, using short pulses to excite most of the Na atoms available, followed by sufficient time to let them decay.

Full text not available from this repository.

More information

Published date: 29 July 2010
Keywords: Guide star laser, high peak power, adaptive optics, dynamic refocusing, macro-micro pulse-burst

Identifiers

Local EPrints ID: 415569
URI: http://eprints.soton.ac.uk/id/eprint/415569
ISSN: 0277-786X
PURE UUID: 966e3812-3a9f-410b-a73a-498af41f5a99

Catalogue record

Date deposited: 15 Nov 2017 17:30
Last modified: 13 Mar 2019 19:14

Export record

Altmetrics

Contributors

Author: Nikita Simakov
Author: Murray Hamilton
Author: Peter J. Veitch
Author: Jesper Munch

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×