Reverse-proton-exchanged waveguide frequency doublers for green light generation

Rostislav V. Roussev; Venkata Bhagavatula; John Himmelreich; Keith Becken; James Tingley

doi:10.1117/12.888015

21 February 2011 Reverse-proton-exchanged waveguide frequency doublers for green light generation

Rostislav V. Roussev, Venkata Bhagavatula, John Himmelreich, Keith Becken, James Tingley

Proceedings Volume 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X; 79171Z (2011) https://doi.org/10.1117/12.888015
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

We describe reverse-proton exchanged (RPE) waveguides in MgO-doped lithium niobate capable of stable secondharmonic generation (SHG) of over 100 mW of CW green light with conversion efficiency exceeding 200%/Wcm². Substantially higher green power would require careful thermal management to limit the phase mismatch due to heating produced by optical absorption. RPE waveguides show ability to support high-power generation of green light superior to anneal-proton exchanged (APE) waveguides containing a higher-index layer. We also demonstrate devices with multipeak spectral response for speckle-reduced green laser by using phase-modulated, quasi-periodic ferroelectric domain structure.

Citation Download Citation

Rostislav V. Roussev, Venkata Bhagavatula, John Himmelreich, Keith Becken, and James Tingley "Reverse-proton-exchanged waveguide frequency doublers for green light generation", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 79171Z (21 February 2011); https://doi.org/10.1117/12.888015

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