Generation and diagnosis of focused ultrashort pulses of complex light

J. Strohaber; I. Mariyenko; Cornelis J. Uiterwaal

doi:10.1117/12.701711

9 February 2007 Generation and diagnosis of focused ultrashort pulses of complex light

J. Strohaber, I. Mariyenko, Cornelis J. Uiterwaal

Proceedings Volume 6483, Complex Light and Optical Forces; 64830M (2007) https://doi.org/10.1117/12.701711
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

We present our current efforts to create pure transversal modes in ultrashort and intense pulses of 800 nm radiation (Ti:sapphire). Our longer-term goal is to investigate if and how optical orbital angular momentum affects intense-field excitation and ionization processes. For this purpose we need strong pulses in pure modes. Optical orbital angular momentum is present in Laguerre-Gaussian modes; in the past, we established a technique to create spatial-chirp free pure Laguerre-Gaussian modes using a pair of holographic gratings on film [Opt. Express 13, 7599-7608 (2005)]. However, this technique is unsuitable for high intensity beams, and we are currently exploring the possibilities of a liquid-crystal spatial light modulator (SLM). After careful testing, we have found that our SLM, which we operate as a phase plate, withstands without any problem the full 10¹⁰ W/cm² peak intensity of an amplified pulsed Ti:sapphire beam (< 50 fs pulse duration, repetition rate 1 kHz). Using the SLM, we have recently created a beam of ultrashort and intense pulses with a Hermite-Gaussian(1,0) profile and started to analyze this beam using optical and ionization methods.

Citation Download Citation

J. Strohaber, I. Mariyenko, and Cornelis J. Uiterwaal "Generation and diagnosis of focused ultrashort pulses of complex light", Proc. SPIE 6483, Complex Light and Optical Forces, 64830M (9 February 2007); https://doi.org/10.1117/12.701711

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