Photo-thermo-refractive glass with sensitivity extended to near infrared region

F. Kompan; G. Venus; L. Glebova; H. Mingareev; L. Glebov

doi:10.1117/12.2209599

24 February 2016 Photo-thermo-refractive glass with sensitivity extended to near infrared region

F. Kompan, G. Venus, L. Glebova, H. Mingareev, L. Glebov

Proceedings Volume 9744, Optical Components and Materials XIII; 97440I (2016) https://doi.org/10.1117/12.2209599
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Photo-thermo-refractive (PTR) glass is a multicomponent silicate glass doped with Ce³⁺ and Ag⁺ which is extensively used for holographic recording of volume Bragg gratings (VBGs). Possibility of recording of advanced, complex holograms in the PTR glass is of current interest as it offers great opportunities in imaging and laser systems control. However, the glass does not have capabilities for recording of complex holograms with using light from the visible / IR spectral region due to its UV photosensitivity. Extension of the PTR-glass sensitivity range into the visible / IR spectral region was carried out by doping the original glass with trivalent terbium ions. Photosensitivity mechanism was implemented by means of excited state absorption using a UV photon and a visible photon for excitation of the Tb³⁺ 5d¹4f⁷ band. For the first time refractive index modulation on the order of 2x10^-4 was obtained in PTR glass after exposure to the visible / IR light. Resulting magnitude of induced refractive index allows for high efficiency complex hologram fabrication in Tb³⁺ doped PTR glass for use which in the visible / IR region. Holographic capabilities of Tb³⁺ doped PTR glass were demonstrated by recording a complex hologram in the glass using green and blue light.

Citation Download Citation

F. Kompan, G. Venus, L. Glebova, H. Mingareev, and L. Glebov "Photo-thermo-refractive glass with sensitivity extended to near infrared region", Proc. SPIE 9744, Optical Components and Materials XIII, 97440I (24 February 2016); https://doi.org/10.1117/12.2209599

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