TransWave Photonics, LLC STTR Phase II Award, September 2022

TransWave Photonics, LLC proposes to develop high-power mid-wave infrared (MWIR) beam combining photonic integrated circuits (PICs) by monolithically integrating MWIR gain chips and passive photonic elements using an InP-based material platform that can be grown without wafer bonding. Our PIC device consists of a MWIR quantum cascade laser gain section, a power amplifier array, a waveguide array, and an optical phased array. We expect that our device can produce >50 W average power at 4.6 μm center wavelength and a wavelength tuning range of 230 nm without any mechanical moving parts or free-spacing combining optics.