This technology is a source of mid-infrared radiation that has potential applications in sensing and molecular spectroscopy.
Thermal sources in the mid-infrared region have a wide range of applications, including in sensors and molecular spectroscopy. Current methods of mid-infrared radiation production include quantum cascade lasers, optical frequency comb sources, and conventional incandescent sources. These methods exhibit improved speed and sensitivity compared to older technologies but still require abundant energy input, limiting their use in compact and portable devices.
This technology is a method to generate efficient mid-infrared thermal light sources with minimal power consumption. The device consists of a thin-film thermal emitter and a mirror, which form an optical cavity that is constructed to minimize energy dissipation and increase thermal irradiation output. By choosing the thickness of the film and altering the loss of transmission of the mirror, thermal dissipation can be minimized, and as a result, thermal radiation output is enhanced. Moreover, the thermal emission peak of the device can be easily adjusted without changing any materials or modifying surface properties. Overall, this technology could serve as an efficient source of mid-infrared thermal light, for applications in molecular spectroscopy and sensing.
A prototype consisting of a silicon carbide thin-film emitter has been established and was shown to enhance power output 2.7-fold compared to current standard sources.
IR CU17245
Licensing Contact: Greg Maskel