By using compound opto-semiconductor manufacturing technology developed in-house over many years, Hamamatsu Photonics reports that it is the first in the world to succeed in mass-producing a compound opto-semiconductor (type-II superlattice infrared detector*1) not containing harmful mercury (Hg) and cadmium (Cd) but able to detect mid-infrared light to a wavelength of 14.3 micrometers (a micrometer, abbreviated μm, is one millionth of a meter). Mercury and cadmium are common materials used for mid-infrared detectors but are restricted substances under the RoHS directive issued by EU (European Union) that prohibits use of certain hazardous substances in electrical and electronic products sold in the EU market.
The new product will likely replace currently available mid-infrared detectors that contain restricted substances, and is designed for analytical instruments that rely on mid-infrared light to identify substances contained in the air, foods, and drugs. Hamamatsu will begin selling this new product to domestic and overseas analytical instrument manufacturers on September 2, 2019.
The new product will be on display at the JASIS 2019 exhibition held in Makuhari Messe (Mihama-ku, Chiba-city, Japan) for 3 days from September 4 (Wed) to 6 (Fri). This is Asia’s largest exhibition in analytical and scientific instrument applications.
*1: Type-II superlattice infrared detector is a compound opto-semiconductor with a unique structure composed of thin films of two different materials alternately laminated on a substrate to form a photosensitive layer.