Gentec-EO Discrete Pyroelectric Sensor QS3-IF

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.

Specifications

Detector Type:	Pyroelectric
Spectral Range:	0.1 – 1000 um
Size:	3 mm
Maximum Power:	0.05 W
Noise Equivalent Power:	0.08 uW
Noise Equivalent Power:	80 nW
Current Responsivity:	0.5 μA/W
Thermal Frequency:	0.8 Hz
Voltage Responsivity:	50 V/W
Feedback Resistor:	100 MΩ
Supply Voltage:	±12 V
Aperture Diameter:	3 mm
Dimensions:	9.1Ø x 6.4D mm
Weight:	0.001 kg
Package:	TO5

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Features

Broad Spectral Response: Capable of detecting wavelengths from 0.1 to 1000 µm.
Product Variety: Choose from four families:
- QS-L: Discrete pyro detectors with low noise level.
- QS-H: Discrete pyro detectors 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 Integration: Available in TO5 and TO8 packages for seamless integration into existing systems.
Large Area Sensors: Features 5 mm and 9 mm diameter pyroelectric sensors for easier optical alignment.
Optional IR Windows: Choose from various IR windows to suit your needs:
- 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
- Noise equivalent power: 80 nW
- Spectral range: 0.1 - 1000 μm
- Current responsivity: 0.5 μA/W
- Thermal frequency: 0.8 Hz
- Voltage responsivity: 50 V/W
- Feedback resistor: 100 MΩ
- Supply voltage: ±12 V
Physical Characteristics:
- Aperture diameter: 3 mm
- Absorber: MT
- Dimensions: 9.1Ø x 6.4D mm
- Weight: 0.001 kg
- Package: TO

Applications

Thermal measurements
Laser optics
Metrology
Inspection
Biomedical
Military

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Frequently Asked Questions

What are the advantages of using a pyroelectric detector over other IR detectors?

The advantages of using a pyroelectric detector include room temperature operation, broad spectral response, high sensitivity, and fast response.

What are the different configurations of the Gentec-EO Discrete Pyroelectric Sensor?

The Gentec-EO Discrete Pyroelectric Sensor is provided in two configurations: high sensitivity or high average power.

What are the measurement capabilities of the Gentec-EO Discrete Pyroelectric Sensor?

The Gentec-EO Discrete Pyroelectric Sensor has an aperture diameter of 3 mm, absorber MT, dimensions of 9.1Ø x 6.4D mm, weight of 0.001 kg, and is packaged in TO5.

What are the physical characteristics of the Gentec-EO Discrete Pyroelectric Sensor?

The physical characteristics of the Gentec-EO Discrete Pyroelectric Sensor include a maximum average power of 50 mW, noise equivalent power of 80 nW, spectral range of 0.1 - 1000 μm, current responsivity of 0.5 μA/W, thermal frequency of 0.8 Hz, voltage responsivity of 50 V/W, feedback resistor of 100 MΩ, and supply voltage of ±12 V.

What is a pyroelectric detector?

A pyroelectric detector is a thermal detector that produces a current output proportional to the rate of change of temperature when exposed to radiation.

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