Hamamatsu News 1 / 2020

16 News 2020 Vol.1 Type II Superlattice Infrared Detector P15409-901 Compound Opto-semiconductor that Can Detect up to 14.5 μm World’s First Mass Production without Using Substances Restricted by the RoHS Directive Hamamatsu Photonics is actively engaged in environmental con­ servation activities and in the pursuit of environmentally friendly manufacturing. We have contributed to the preservation of the global environment, the reduction of environmental burden and have been developing products with the impact on the environment always in mind. As a compound opto-semiconductor device capable of detecting up to 14.5 μm, the world’s first “Type II superlattice infrared detector,” was successfully mass produced without using substances restricted by the RoHS Directive* 1 , is one such product that reflects our efforts. In Focus Cutoff wavelength (µm) 14 15 10 8 5 3 10 11 10 10 10 9 10 8 10 7 10 6 D* (cm∙Hz 1/2 /W) D* at λ p (cm∙Hz 1/2 /W) Hamamatsu infrared detector lineup Mid infrared spectrophotometers that are required to comply with RoHS Directives Spectrophotometry is an analysis method in which substances contained in liquids and gases are identified by using the property that the ratio of light emission and absorption varies depending on the bonding state of molecules and atoms. The Fourier transform infrared spectrophotometer (FTIR) is used in a wide variety of fields such as food, agriculture, and medical care because it covers a wide range of absorption bands of organic substances existing near 14 μm. However, many mid infrared detectors used in FTIR have elements containing mercury and cadmium, which are regulated by an EU RoHS Directive, so there was a need to develop an alternative product. Therefore, we have been developing infrared detectors that can detect up to the 14 μm band, which was not possible with conventional InAsSb* 2 photovoltaic detectors. P10090 series P13243 series P12691- 201G P13894 series 3 µm band 5 µm band 8 µm band 10 µm band 14 µm band P15409-901

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