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Displaying 1 - 8 of 8

Second harmonic generation in GaAs-on-insulator waveguides fabricated at the wafer-scale

March 18, 2020
Author(s)
Eric J. Stanton, Jeff Chiles, Nima Nader, Galan Moody, Nicolas Volet, Lin Chang, John E. Bowers, Sae Woo Nam, Richard Mirin
Second harmonic generation (SHG) is demonstrated with unprecedented efficiency for a single-pass device. Modal phase-matching in GaAs-on-insulator waveguides is used to convert a 2.0 µm TE pump to a 1.0 µm TM signal with an efficiency of 40 W−1 in a length

Nonlinear Silicon waveguides produce tunable frequency combs spanning 2.0-8.5 ?m

September 25, 2019
Author(s)
Nima Nader, Abijith S. Kowligy, Jeffrey T. Chiles, Eric J. Stanton, Henry R. Timmers, Alexander J. Lind, Kimberly Briggman, Scott Diddams, Flavio Caldas da Cruz, Richard Mirin, Sae Woo Nam, Daniel M. Lesko
We present fully air clad suspended-silicon waveguides for efficient nonlinear interactions limited only by the silicon transparency. Novel fork-shaped couplers provide efficient input ( 2 dB) and broadband 3 dB output coupling spanning 6.0-8.5 υm

Multi-functional integrated photonics in the mid-infrared with suspended AlGaAs on silicon

September 18, 2019
Author(s)
Jeff Chiles, Nima Nader, Eric J. Stanton, Daniel Herman, Galan Moody, Biswarup Guha, Kartik Srinivasan, Scott Diddams, Ian Coddington, Nathan R. Newbury, Jeff Shainline, Sae Woo Nam, Richard Mirin, Jiangang Zhu, Juliet Gopinath, Connor Fredrick
The microscale integration of mid- and longwave-infrared photonics could enable the development of fieldable and reliable chemical sensors. The choice of material platform immediately determines the strength and types of optical nonlinearities available