A compact dispersive delay generator using angular dispersion amplification

Santanu Basu

doi:10.1117/12.846422

17 February 2010 A compact dispersive delay generator using angular dispersion amplification

Santanu Basu

Proceedings Volume 7578, Solid State Lasers XIX: Technology and Devices; 75781B (2010) https://doi.org/10.1117/12.846422
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

In this paper, I present the design of a dispersive delay generator that is capable of producing 1 ns per 1 nm dispersive delay in a compact footprint. The path length delay produced by a grating and free space is amplified by introduction of a total internal reflection surface operating at an angle of incidence near the critical angle. Both positive and negative amplification may be realized in this technique by changing the orientation of the angular dispersion amplifier optic. The device is not wavelength sensitive and it uses bulk optics, which can handle high average power and high peak power. Because this method produces significant pulse stretching for a given pulse bandwidth, it may lead to higher peak power laser sources in the future. This delay generator has applications in pulse compressor, pulse stretcher or pulse shaper in chirped pulse amplification and high-resolution time gated spectroscopy. The delay generator can also be fabricated on silicon wafers for photonics integrated circuits.

Citation Download Citation

Santanu Basu "A compact dispersive delay generator using angular dispersion amplification", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75781B (17 February 2010); https://doi.org/10.1117/12.846422

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