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Infrared Detector
Hamamatsu Photonics紅外線偵測器靈敏度波長大於1微米。精心挑選的材料組合可提供各種類光譜範圍選擇。
Hamamatsu Photonics Infrared detectors with sensitivity to wavelengths above 1 µm. Careful selection of material combinations allows offering a variety of types that cover a broad spectral range. 
 
Infrared detectors are widely used in diverse field including measurement, analysis, industry, communication, agriculture, medicine, physical and chemical science, astronomy and space. Based on long experience involving photonic technology, Hamamatsu provides a wide variety of infrared detectors in order to meet a large range of application needs. In addition to the standard devices listed in this catalog, custom devices are also available on request. Please feel free to contact the nearest sales office in your area.
 
 
Hamamatsu Infrared Detectors

 

Spectral response of HAMAMATSU infrared detectors (typical example)

 

When using infrared detectors, the following points should be taken into consideration for making a device selection.

 
Spectral response
As can be seen from the fi gure above, HAMAMATSU provides a variety of infrared detectors with different spectral response characteristics. It should be noted that cooling a detector element may affect its spectral response. For InGaAs, InAs, InSb and InAsSb detectors, the spectral response shifts to the shorter wavelength side; in contrast, for PbS, PbSe and MCT detectors it shifts to the longer wavelength side.
 
Response speed
Various detectors are available with different response speeds. It should be noted that the response speeds of the PbS and PbSe detectors become worse with cooling.
 
Photosensitive area and number of elements
HAMAMATSU photosensors are available in a wide range of photosensitive area sizes. Also available are multi-element detector arrays optimized for high-speed multichannel spectrophotometry.
 
Cooling
Besides easy-to-use photosensors designed for room temperature, HAMAMATSU provides various types of sensors that are cooled with thermoelectric coolers, cryogenic dewars (for liquid nitrogen cooling).
 
Object temperature
When selecting a detector in accordance with the temperature of an object, it is necessary to consider the distribution of the energy (the wavelength dependency of the energy) radiated from the object. When the temperature of the object is changed, the distribution of the radiating energy is given by the law of black body radiation (Planck's law), as shown in the fi gure at the righthand side. The following relationship is established by the peak sensitivity wavelength λp (μm) and the absolute temperature T (K). λp · T=2897.9
 
Law of black body radiation (Planck's law)

 

Photon Drag Detector

Photon Drag Detector
The photon drag detector makes use of the “photon drag effect” in which holes created in a semiconductor by incident photons are dragged along in the direction of the photons, generating an electromotive force. Because of its sensitivity at 10.6 μm, this detector is suitable for detection of CO2 lasers. The surface of the detector element is coated with a non-reflective material.
The C12496-046 is a infrared detector module with preamp designed to detect infrared light by connecting to a DC power supply.

Two-color detectors

Two-color detectors
Two-Color Detectors use a combination of two light sensors with different spectral response, in which one sensor is mounted over the other sensor along the same optical axis to provide a broad spectral response range. Thermoelectrically cooled two-color detectors are also provided that cool the sensors to maintain their temperatures constant, allowing high precision measurement with an improved S/N.

Thermopile detectors

Thermopile detectors
Hamamatsu provides high-sensitivity thermopile detectors suitable for gas concentration measurement, etc. Concentration of various types of gases can be measured by attaching a band-pass fi lter to thermopile detectors.

InAs/InAsSb/InSb photovoltaic detectors, InSb photoconductive detectors

InAs/InAsSb/InSb photovoltaic detectors, InSb photoconductive detectors
InAs photovoltaic detectors are capable of detecting infrared light up to approx. 3.5 μm. InSb photovoltaic detector can sense infrared light up to approx. 5.5 μm, and InSb photoconductive detectors infrared light up to approx. 6 μm. InAsSb photovoltaic detectors also delivers high sensitivity in the 5 μm, 8 μm, or 10 μm band. InSb photoconductive detectors are available in multielement arrays (custom-made product). InAs and InSb photovoltaic detectors cover a spectral response range equivalent to PbS and PbSe photoconductive detectors, respectively, and feature higher response speed and better S/N.

InGaAs PIN Photodiode

InGaAs PIN Photodiode

● Short wavelength enhanced type

● Standard type

● Long wavelength type

● Infrared detector modules with preamp

● InGaAs photodiode arrays

● InGaAs linear image sensors for spectrometry

● High-speed type InGaAs linear image sensors

● Back-illuminated type InGaAs linear image sensors

● InGaAs area image sensors