Longitudinal mode selection in a dye Q-switched ruby laser: a comparison between theoretical and experimental results

Thangavel M. Thevar*, John Watson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper provides a mathematical analysis to calculate the number of longitudinal modes and their relative strength in a dye Q-switched ruby laser. The calculations were based on formulae developed to accurately predict the number of loop transmits that occur while the laser pulse builds up from noise levels. An experiment was carried out using a ruby laser set-up to confirm our theoretical predictions. The number of longitudinal modes present in the laser output was evaluated by recording holograms of a two meter long graduated panel using the same laser source. The end results closely matched our theoretical predictions. This proven mathematical analysis was then applied to our laser design to optimize the longitudinal mode selection property of the dye Q-switch in the laser. As a result, the developed ruby laser produced single longitudinal mode pulses at a probability of 98%.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsSui-Sheng Mei, Keith A. Truesdell
Pages60-69
Number of pages10
Publication statusPublished - 1996
EventHigh-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers - Beijing, China
Duration: 4 Nov 19965 Nov 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2889

Conference

ConferenceHigh-Power Lasers: Solid State, Gas, Excimer, and Other Advanced Lasers
CityBeijing, China
Period4/11/965/11/96

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