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Pyroelectric Detectors

 

 

Pyroelectric detectors are designed to measure the energy of short optical pulses that have a maximum width of 5 µs to 400 µs, depending upon detector design. Pyroelectric detectors are made of a ferroelectric crystal, which has a permanent dipole moment. When subjected to an optical pulse, the crystal is heated and causes the dipole moment to change. The changing of this dipole moment causes a current to flow. When using pyroelectrics, care must be taken not to exceed the maximum pulse width or the maximum repetition rate.

Products & Services
Energy meters measure the total energy of a single pulse and optical power meters measure the average power of a continuous light beam. Search by Specification | Learn more about Energy Meters and Optical Power Meters
High performance liquid chromatograph (HPLC) detectors pass a beam of light through a column effluent as the fluid passes through a low-volume flow cell. Variations in light intensity are recorded and a chromatograph is generated. Search by Specification | Learn more about HPLC Detectors
Scintillation counters are used to detect gamma, x-ray and neutron radiation. They consist of a detector for sensing incident radiation and a photomultiplier for producing countable pulses. Learn more about Scintillation Counters
Infrared (IR) spectrometers measure the wavelength and intensity of the absorption of infrared light by a sample. Search by Specification | Learn more about Infrared Spectrometers
Noncontact infrared temperature sensors absorb ambient infrared (IR) radiation given off by a heated surface. They are used in applications where direct temperature measurement is not possible. Search by Specification | Learn more about Noncontact Infrared Temperature Sensors
Product Announcements
OSI Optoelectronics - Photoconductive Photodiodes
The Photoconductive Detector Series are suitable for high speed and high sensitivity applications. The spectral range extends from 350 to 1100 nm, making these photodiodes ideal for visible and near... (read more)
CVI Melles Griot - Power and Energy Meters
- Melles Griot offers a wide variety of power and energy meters. The integrated power meter system, using thermopile technology, has a flat response from 200 nm to 20 µm, and can measure output power... (read more)
Solar Light Company, Inc. - Photostability Sensors -Calibration In Place
The PMA4100 Series Photostability detectors are process control detectors that have the capability of being calibrated in the field by the end user. The PMA 4100-420 Detector System has 2 detector... (read more)
OSI Optoelectronics - Blue Enhanced Photodiodes
The Photovoltaic Detector series is utilized for applications requiring high sensitivity and moderate response speeds, with an additional sensitivity in the visible-blue region for the blue enhanced... (read more)
Topics of Interest
The radiation sensitive key components of InfraTec's detectors are single crystalline lithium tantalite (LiTaO3) elements formed as a very thin plate capacitor. Lithium tantalate is a pyroelectric... (Read More)
The reason such precautions are taken is that an open circuit pyroelectric chip can generate a voltage of 600 V from a temperature change of 50 deg C. This is particularly true of detectors designed... (Read More)
A customer who is completing his doctorate in Chemistry at the California Institute of Technology has identified the need to measure fast optical signals using fast photo-detectors. The signal pulse... (Read More)
4.2.3 Dependence of Optical Gain on Crystal Orientation for Strained QWs In Section 4.2.2, the in-plane gain distribution on the (001) plane of the QW active layer is found to be isotropy. This is... (Read More)
9.4.2 Timing Jitter XPM interaction among neighboring channels can induce considerable timing jitter. The situation is somewhat different from the intrachannel case discussed in Section 8.4.2 where... (Read More)
See more product announcements for Energy Meters and Optical Power Meters
Power and Energy Meters

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CCD Beam Profilers

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