100-W Quantum Cascade Laser (QCL) Bars and 1-kW QCL Stacks Navy SBIR FY2014.2 Sol No.: Navy SBIR FY2014.2 Topic No.: N142-093 Topic Title: 100-W Quantum Cascade Laser (QCL) Bars and 1-kW QCL Stacks Proposal No.: N142-093-0237 Firm: TeraDiode, Inc. 30 Upton Drive Wilmington, Massachusetts 01887 Contact: Robin Huang Phone: (978) 988-1040 Web Site: http://www.teradiode.com Abstract: There is a compelling need for compact high brightness mid-wavelength infrared (MWIR) lasers. Applications of such sources include spectroscopic detection of the "fingerprint" of molecular absorptions, illumination, electronic warfare (EW), and infrared countermeasure (IRCM) systems in response to increasingly sophisticated seeker technologies and increased threat ranges. Today's state-of-the-art high power quantum cascade laser (QCL) sources are single emitter devices. We propose, for the first time, to produce a 100-W-class QCL bar. These QCL bars can be stacked to obtain > 1 kW in a stack. Such a bar will be used in combination with TeraDiode's proprietary Wavelength Beam Combining (WBC) to produce a single, nearly diffraction-limited output beam at hundreds of watts to kilo-watts in output power. Benefits: Anticipated benefits of the research and development performed in this program include: 1. Very high brightness and power all-semiconductor laser module 2. Very low size, weight, and power (SWAP) 3. >= 100 W CW projected power Return