UV integrated optics devices based on beta-barium borate

Poberaj, Gorazd and Degl'Innocenti, Riccardo and Medrano, Carolina and Günter, Peter (2009) UV integrated optics devices based on beta-barium borate. Optical Materials, 31 (7). pp. 1049-1053. ISSN 0925-3467

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Abstract

We report on our recent progress in development of ultraviolet (UV) integrated optics devices based on beta-barium borate (BBO). Planar optical waveguides with a thickness of a few micrometers have been formed by the implantation of He+ ions with energies of around 2 MeV. Two alternative methods based on the femtosecond-laser assisted micromachining and lithographic structuring for the fabrication of ridge-type channel optical waveguides in implanted BBO crystals have been developed, and the transmission properties of the obtained waveguides have been studied. We demonstrate a big potential of the fabricated channel waveguides for the second harmonic generation of continuous-wave deep-UV laser light with a power of the order of 1 mW, exploiting the nonlinear optical properties of BBO crystal. In addition, a low-voltage electro-optic waveguide modulator for the deep-UV light (half-wave voltage times electrode length Vπ × l = 43 V cm at 257 nm) was realized for the first time.

Item Type:
Journal Article
Journal or Publication Title:
Optical Materials
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1700
Subjects:
ID Code:
89509
Deposited By:
Deposited On:
08 Jan 2018 14:26
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Jun 2020 06:12