A new approach for tunable subnanosecond pulse generation using an active mirror: theoretical and experimental study

Margarita Ang Deneva; Pepa I. Uzunova; Marin N. Nenchev

doi:10.1117/12.618708

22 April 2005 A new approach for tunable subnanosecond pulse generation using an active mirror: theoretical and experimental study

Margarita Ang Deneva, Pepa I. Uzunova, Marin N. Nenchev

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Proceedings Volume 5830, 13th International School on Quantum Electronics: Laser Physics and Applications; (2005) https://doi.org/10.1117/12.618708
Event: 13th International School on Quantum Electronics: Laser Physics and Applications, 2004, Bourgas, Bulgaria

Abstract

We report a simple technique for generation of tunable subnanosecond pulses (0.1-0.3 ns) based on single spike selection from the relaxation oscillations in a dye laser by use of an active mirror. The selection is in original two-wavelength cavity with competitive generations at two wavelengths, the second of which is forced in appropriate moment by the quickly included amplification of the active mirror to suppress the initially started lasing in the first channel. To produce such switching we form the pump pulse by temporal division of a 15-50 ns standard pump laser pulse using a Pockel's cell with a 1-2 ns switching time and an optical delay line. We have shown that in addition, such formation increases essentially the selected spike power. The proposed technique widens the choice of suitable lasers in which the single spike selection technique may be applied to include dye lasers excited by a Q-switched solid-state laser or a Cu-vapor laser. The other advantages in comparison with the given in the literature single-spike selection techniques is the improved reproducibility of the selection for high (~100-200%) pump pulse power fluctuations, shorter pulse duration and pulse shape improvement. Both theoretical consideration and experimental verification are carried out.

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Margarita Ang Deneva, Pepa I. Uzunova, and Marin N. Nenchev "A new approach for tunable subnanosecond pulse generation using an active mirror: theoretical and experimental study", Proc. SPIE 5830, 13th International School on Quantum Electronics: Laser Physics and Applications, (22 April 2005); https://doi.org/10.1117/12.618708

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KEYWORDS

Disk lasers

Dye lasers

Pulsed laser operation

Q switched lasers

Switching

Oscilloscopes

Nd:YAG lasers

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