Phase-matched optical wave mixing in the XUV region by two-colour high-order harmonic generation

Khoa Anh Tran; Khuong Ba Dinh; Peter Hannaford; Lap Van Dao

doi:10.1117/12.2292659

14 May 2018 Phase-matched optical wave mixing in the XUV region by two-colour high-order harmonic generation

Khoa Anh Tran, Khuong Ba Dinh, Peter Hannaford, Lap Van Dao

Proceedings Volume 10684, Nonlinear Optics and its Applications 2018; 106840K (2018) https://doi.org/10.1117/12.2292659
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

We report here evidence of phase-matched optical wave mixing in the extreme ultraviolet (XUV) region. This process has been studied with a collinear two-colour high-order harmonic generation scheme. An 800 nm, 30 fs driving field is used to produce a small bandwidth comb of odd harmonic orders (wavelength around 30 nm) in a long cell filled with argon gas. Mixing frequencies in this spectral range are produced by applying a second weak control-field of 1,400 nm, 40 fs. Low order (third- and fifth-order) nonlinear optical wave mixing is observed to be a phase-matched process. The dependence of the intensity of the harmonic orders and the mixing frequencies on different control-field intensities, gas pressure, and interaction length is analysed to verify the phase matching process.

Citation Download Citation

Khoa Anh Tran, Khuong Ba Dinh, Peter Hannaford, and Lap Van Dao "Phase-matched optical wave mixing in the XUV region by two-colour high-order harmonic generation", Proc. SPIE 10684, Nonlinear Optics and its Applications 2018, 106840K (14 May 2018); https://doi.org/10.1117/12.2292659

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