Third harmonic generation by volume Bragg grating in photo-thermo-refractive glass irradiated by IR femtosecond pulses

Leo Siiman; Julien Lumeau; Lionel Canioni; Leonid B. Glebov

doi:10.1117/12.768210

13 February 2008 Third harmonic generation by volume Bragg grating in photo-thermo-refractive glass irradiated by IR femtosecond pulses

Leo Siiman, Julien Lumeau, Lionel Canioni, Leonid B. Glebov

Author Affiliations +

Proceedings Volume 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII; 687510 (2008) https://doi.org/10.1117/12.768210
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

Three conditions for non-collinear third harmonic generation by a PTR glass volume Bragg grating are demonstrated using infrared femtosecond pulse illumination. Each condition corresponds to a different angle of grating orientation. We identify the angles as corresponding to Bragg diffraction at ω, Bragg diffraction at 3ω, and a non resonant Bragg angle involving three ω photons interacting with a nonlinear grating vector. The generation of non-collinear third harmonic at each of these angles is modeled with wavevector interactions. Theoretical predictions from the wavevector equations are obtained and compared to experimental measurements. We discuss the nonlinear grating in the PTR glass grating as resulting from modulation in the nonlinear refractive index of PTR glass.

Citation Download Citation

Leo Siiman, Julien Lumeau, Lionel Canioni, and Leonid B. Glebov "Third harmonic generation by volume Bragg grating in photo-thermo-refractive glass irradiated by IR femtosecond pulses", Proc. SPIE 6875, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VII, 687510 (13 February 2008); https://doi.org/10.1117/12.768210

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