10 March 2016 Tunable repetition rate VECSEL for resonant acoustic-excitation of nanostructures
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Abstract
We report a passively mode-locked InGaAs-quantum well VECSEL, emitting a constant pulse train at an average output power of 18 mW and emission wavelength of 1035 nm, with a continuously tunable pulse repetitionfrequency (PRF) between 0.88 - 1.88 GHz. Pulse duration was 230 fs over 80% of that range. Here we propose a technique making use of the demonstrated VECSEL PRF tunability for a resonant frequency-domain pumpprobe spectroscopic technique for acoustic interrogation of nanostructures. Simulation of suitable GHz acoustic resonators to demonstrate this technique is described.
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T. Chen Sverre, T. Chen Sverre, C. R. Head, C. R. Head, A. P. Turnbull, A. P. Turnbull, E. A. Shaw, E. A. Shaw, A. C. Tropper, A. C. Tropper, O. L. Muskens, O. L. Muskens, "Tunable repetition rate VECSEL for resonant acoustic-excitation of nanostructures", Proc. SPIE 9734, Vertical External Cavity Surface Emitting Lasers (VECSELs) VI, 97340Z (10 March 2016); doi: 10.1117/12.2212748; https://doi.org/10.1117/12.2212748
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