Description
Our pyroelectric detectors are a class of room temperature thermal detectors that produce a current output that is directly proportional to the rate of change of temperature when exposed to a source of radiation. They are best described by an AC current source, capacitor and resistor. Their current output is governed by the equation I = p(T)·A·dT/dt, where I is current, p(T) is the pyro coefficient, A is the area as defined by the front electrode, and dT/dt is the rate of temperature change of the pyro crystal. The advantages of a pyroelectric detector over other IR detectors are: room temperature operation, broad spectral response, high sensitivity (D*) and fast response (sub-nsec into 50 Ω).
Our passive discrete pyroelectric detectors range from 1 to 9 mm in diameter and are provided in two configurations: high sensitivity or high average power. They present a pyroelectric detector element covered with our metallic coating (MT) and are packaged in a miniature TO-5 or TO-8 can. The diagram shown left identifies the pin-out for both types of detectors. Our organic black coating (BL), increases the optical absorption and helps flatten the spectral response. We also offer a number of permanent IR Windows that can be added to the TO can. These discrete pyro detectors are ideal for pulsed laser applications.
Gentec-EO Discrete Pyroelectric Sensor QS2-L
Specifications
Detector Type: | Pyroelectric |
---|---|
Spectral Range: | 0.1 – 1000 um |
Size: | 2 mm |
Maximum Power: | 0.05 W |
Current Responsivity: | 0.5 μA/W |
Thermal Frequency: | 1.6 Hz |
Temperature Coefficient: | 0.2 %/°C |
Aperture Diameter: | 2 mm |
Absorber: | MT |
Dimensions: | 9.1Ø x 6.4D mm |
Weight: | 0.001 kg |
Package: | TO5 |
Features
- Broad Spectral Response: Covers a wide range from 0.1 to 1000 µm, making it versatile for various applications.
- Four Product Families:
- QS-L: Discrete pyro detectors with low noise level.
- QS-H: Discrete pyro detectors designed for high average power.
- QS-IF: Hybrid pyro detectors in current mode with fast response.
- QS-IL: Hybrid pyro detectors in current mode with low noise level.
- Easy to Integrate: Available in TO5 and TO8 packages, making them compact and easy to integrate into existing systems.
- Large Area Sensors: Features 5 mm and 9 mm diameter pyroelectric sensors for easier optical alignment.
- Optional IR Windows:
- Quartz: 0.2 – 3.5 µm
- Barium Fluoride: 0.2 – 17.5 µm
- Sapphire: 0.1 – 7.0 µm
- Silicon: 1.2 – 9.0 µm and 22 – 100 µm
- AR Germanium: 1.8 – 23 µm (10.6 µm peak)
- Measurement Capabilities:
- Maximum Average Power: 50 mW
- Spectral Range: 0.1 - 1000 μm
- Current Responsivity: 0.5 μA/W
- Thermal Frequency: 1.6 Hz
- Temperature Coefficient: 0.2 %/°C
- Aperture Diameter: 2 mm
- Absorber: MT
- Physical Characteristics:
- Dimensions: 9.1Ø x 6.4D mm
Applications
- Thermal measurements
- Laser optics
- Metrology
- Inspection
- Biomedical
- Military
Frequently Asked Questions
What are the advantages of a pyroelectric detector over other IR detectors?
What are the applications of the Gentec-EO Discrete Pyroelectric Sensor QS2-L?
What are the different families of products to choose from in the Gentec-EO Discrete Pyroelectric Sensor line?
What are the physical characteristics of the Gentec-EO Discrete Pyroelectric Sensor QS2-L?
What is a pyroelectric detector?
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