GaSb/Si laser spectrometer-on-chip technology for sensing applications

Abstract

Hybrid GaSb/Si tunable laser spectrometer-on-a-chip technology offers scalable all-semiconductor solutions for spectroscopic sensing of liquids and multiple gases in 1900 nm- 2400 nm the spectral range. We demonstrate a 4-channel spectrometer on chip with> 400 nm tuning bandwidth and excellent power and wavelength stability.