NEW Mid-infrared light-emitting diodes (MIR LED)from 2800 nm to 6500 nm for gas sensing

摘要

nanoplus presents continuous-wave Mid-Infrared LEDs (MIR LED) at any customised wavelength between 2800 nm and 6500 nm. The devices feature continuous-wave operation at room temperature, little power consumption, and a relatively small spectral bandwidth. With these specifications, they are a broadband, incoherent and cost-effective alternative to lasers for many gas sensing applications. Portable detectors especially will benefit from their high wall-plug efficiencies. The mid-infrared LEDs are available on ceramic sub-mount or printed circuit board (PCB). The wavelength window between 3 urn and 6 urn is a key for high-precision gas analysis based on tunable diode laser absorption spectroscopy (TDLAS). Many trace gases ubiquitous to industrial sites have their strongest absorption bands in this region. They show absorption strengths that are several orders of magnitude higher than those in other infrared areas. This concerns prevalent molecules such as carbon dioxide (CO_2), nitric oxide (NO), or water (H_2O). Most hydrocarbons, such as methane, ethane, or acetylene, equally locate their topmost absorbing features at these mid-infrared wavelengths.