Title

Third Harmonic Generation By Volume Bragg Grating In Photo-Thermo- Refractive Glass Irradiated By Ir Femtosecond Pulses

Keywords

Femtosecond; Phase matching; PTR glass; Third harmonic generation; Volume Bragg grating

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.

Publication Date

6-13-2008

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

6875

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.768210

Socpus ID

44849089325 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/44849089325

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