Design of efficient single-stage chirped pulse difference frequency generation at 7 μm, driven by a dual wavelength Ti:sapphire laserReportar como inadecuado




Design of efficient single-stage chirped pulse difference frequency generation at 7 μm, driven by a dual wavelength Ti:sapphire laser - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Applied Physics B

, Volume 117, Issue 1, pp 379–387

First Online: 30 April 2014Received: 19 December 2013Accepted: 13 April 2014

Abstract

We present simulations for a design of a high-energy single-stage mid-IR difference frequency generation adapted to a two-color Ti:sapphire amplifier system. The optimized mixing process is based on chirped pulse difference frequency generation CP-DFG, allowing for a higher conversion efficiency and reduced two-photon absorption losses. The numerical start-to-end simulations include stretching, chirped pulse difference frequency generation and pulse compression. Realistic design parameters for commercially available nonlinear crystals GaSe, AgGaS2, LiInSe2, LiGaSe2 are considered. Compared with conventional unchirped DFG directly pumped by Ti:sapphire technology, we predict a threefold increase in the quantum efficiency. Our CP-DFG scheme provides up to 340 μJ pulse energy directly at 7.2 μm when pumped with 8 mJ and supports a bandwidth of up to 350 nm. The resulting 240 fs mid-IR pulses are inherently phase stable.

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Autor: Christian Erny - Christoph P. Hauri

Fuente: https://link.springer.com/



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