Autors: Deneva, M. A., Nenchev M.N. Title: A Pure Optical Arrangement Using an Optical Transistor to Form a Temporally Controlled Sequence of Nanosecond Pulses Keywords: brightening medium, control light by light, Cr4+:YAG absorber, optical transistor, sequence of nanosecond pulsesAbstract: We describe and analyse in detail our new approach to developing a simple, purely optical, device for converting continuous laser radiation into a series of nano (or sub-nano) pulses with controllable duration and temporal (and spatial) spacing. The basis is the application of the optical transistor, which we have introduced as an optical device, to control light by light in a purely optical way. In particular, we show the possibility of using a saturable Cr4+:YAG absorber with its typical manufacturing parameters. The same methodology is possible using saturable dyes as the control medium. References - M. Deneva, P. Uzunova and M. Nenchev, "Tunable subnanosecond laser pulse generation using an active mirror concept", Optical and Quantum Electronics, vol. 39, pp. 193-212, June 2007.
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- M. Nenchev, Devices for laser light control, Bulg. Patent No 90903/1990
- M. Nenchev, E. Stoykova and M. Deneva, "Composite wavelength tunable wedged interference structures with increased free spectral range", Optical and Quantum Electronics, vol. 50, article number 433, November 2018, https://doi.org/10.1007/s11082-018-1668-9.
- M.Deneva, M.Nenchev, "Development and application of a new device for light control by light (optical transistor)", Proc. Intern. Confer. "Electronics-ET'04, (2004) book 1, pp. 181-185; ISBN 954-438-445-6
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- B. Cole, J. Lei, T. DiLazaro, B. Schilling, Lew. Goldberg, "Optical triggering of a Q-switched Nd:YAG laser via transverse bleaching of a Cr:YAG saturable absorber", Appl. Opt. 2009 Nov 1;48(31):6008-14.
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