Ruby laser repetitively pulsed at rates up to 500 kHz containing etalons and amplification

Charles L. Goldey; Jeffrey M. Grace; Peter E. Nebolsine; Jonathan Mark Huntley

doi:10.1117/12.308666

27 May 1998 Ruby laser repetitively pulsed at rates up to 500 kHz containing etalons and amplification

Charles L. Goldey, Jeffrey M. Grace, Peter E. Nebolsine, Jonathan Mark Huntley

Proceedings Volume 3265, Solid State Lasers VII; (1998) https://doi.org/10.1117/12.308666
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

A multi-pulsed ruby laser system has been developed utilizing repetitive Q-switching technology. The laser system has applications in fields where high speed dynamic events are studied, e.g., ballistics and non-destructive test evaluation, using laser imaging diagnostics such as photography, holography, and various interferometric techniques. The laser system is capable of producing more than 50 pulses at a repetition rate in excess of 500 kHz with a nearly constant pulse-to-pulse energy of several mJ. The individual laser pulses are approximately 50 ns FWHM and the envelope of multiple pulses is greater than 200 microseconds. The method for multiple Q-switching by modulating the Pockels cell's quarter wave voltage and the formation of an individual Q- switched pulse have been investigated and a computational model has been formulated. The energy within the individual pulses formed in the oscillator cavity has been successfully increased without degradation of the temporal or pulse-to- pulse amplitude stability by propagating through an amplification section. Data of an amplified pulse train at a repetition rate of 500 kHz is given. Etalons for longitudinal mode selection and an iris for spatial mode selection have been incorporated for increased coherence and an image of a reconstructed hologram is presented.

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Charles L. Goldey, Jeffrey M. Grace, Peter E. Nebolsine, and Jonathan Mark Huntley "Ruby laser repetitively pulsed at rates up to 500 kHz containing etalons and amplification", Proc. SPIE 3265, Solid State Lasers VII, (27 May 1998); https://doi.org/10.1117/12.308666

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