title: Widely tunable frequency conversion in monolithic semiconductor waveguides at 2.4  μm.
abstract: We report on the generation of continuous-wave widely tunable light between 2360 and 2530 nm using difference-frequency generation with a pump tuned between 938 and 952 nm and a signal tuned between 1490 and 1590 nm in a type-II phase-matched monolithic semiconductor waveguide. The device internal conversion efficiency is estimated to be 0.29%  W(-1)  cm(-2). This design which uses a single-sided Bragg reflection waveguide has the potential for on-chip spectroscopy, as well as environmental monitoring applications, where a tunable source of coherent radiation tuned between 2 and 3 μm wavelength is desired.
authors: Payam
authors: P
authors: Abolghasem
authors: Dongpeng
authors: D
authors: Kang
authors: Dylan F
authors: DF
authors: Logan
authors: Mandy
authors: M
authors: Lungwitz
authors: Amr S
authors: AS
authors: Helmy