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Infrared detection module integrates infrared photodetector, signal processing electronics, optics, heat dissipation systems and other components in common package.
The integration makes detectors less vulnerable to over-bias, electrostatic discharges, electromagnetic interferences and other environmental exposures. Additional advantages of integration are improved high-frequency (HF) performance, output signal standardization, miniaturization, and cost reduction. VIGO offers detection modules with an infrared detector optimized for uncooled or at temperatures acheivable with Peltier-cooler operation in the spectral range from 2 µm to 12 μm.
Various circuit designs have been developed to optimize the performance of the modules in various applications.

IR radiation emitted by an object is concentrated on the active area of an IR detector, generating photoelectric signals which are sensed by the front-end electronics (FEE).

The front-end electronics circuitry is typically used to:

  • Provide optimum conditions for the operation of IR detectors (to achieve high sensitivity, fast response, and a wide dynamic range. This is typically achieved with optimized constant voltage bias and current mode of the photoelectric signal readout.)
  • Protect detector elements against overbias.
  • Amplify the signal within the required frequency band. This could be done with a minimized contribution of the preamplifier  noise to the resulting noise of the detection module.

In addition to front-end electronics, detection modules may include additional electronic blocks for signal conditioning, such as gain blocks, filters, thermoelectric cooler controllers, analog-digital converters (ADC) and other components.

UM Series

Integration of detector, preamplifier and TEC controller in compact, seald package has important advantages: miniaturization, beter high-frequency performance, immunity to electromagentic interferences (EMI), improved reliability, easy of use and reduced costs.

There are three models in universal module series:

  1. Optimized for operation in the spectral range of 3 um to 6.7 um and frequency bandwidth from DC to 1 MHz with photovoltaic detector optically immersed .
  2. Optimized for operation in the spectral range of 2 um to 12 um and frequency bandwidth from DC to 100 MHz with photovoltaic multiple junction detector optically immersed 
  3. Optimized for operation in the same spectral range and the same frequency bandwidth but with photovoltaic multiple junction detector without immersion microlens.

The output signal is standard voltage with a fifty Ohms impedance (50Ω). Additional DC output is available as a standard.

Cost effective OEM version is available (for minimum order quantity 100 pcs).

It is very convenient and user friendly module series and can be used in many applications like: Gas detection, monitoring and analysis, fuel combustion monitoring at power plants, contactless temperature measurements, carbon dioxide laser (CO2)  measurements, laser calibration, power monitoring and control.

Image
Name
order
Optimal wavelength
λopt, µm
Optical area
A₀, mm×mm
Detectivity
D* (λopt), cm·Hz1/2/W
Output voltage responsivity
Rv (λopt, RL=50Ω), V/W
-3dB Bandwidth
Datasheet

LabM Series

Programmable detection modules enable control of many parameters, such as bandwidth and gain, even during normal operation.

This opens up completely new possibilities to designers of measuring systems.

In a fully analogue input circuit, many switching elements are used, even with a variable, digitally-controlled capacitance to compensate the transimpedance input stage.

The internal architecture is similar to standard detection modules. The main difference is that most of the internal functional blocks are configurable.

To provide information about the module status it is equipped with bias and dc offset monitoring circuits. It is possible to build a system with adaptive gain or overload protection. Adjustable bandwidth can help to achieve the best possible noise performance for various signal types.

There are two models in this module series:

  1. Optimized for operation in the spectral range of 3 um to 6.9 um and adjustable frequency bandwidth from 10 Hz up to 200 MHz with photovoltaic detector optically immersed.
  2. Optimized for operation in the spectral range of 2 um to 12 um and adjustable frequency bandwidth from DC up to 100 MHz with photovoltaic multiple junction detector optically immersed.

For proper operation of the module programmable VIGO thermoelctric cooler controller PTCC-01 (sold separately) and Smart Manager Software (freeware) are required. There are theree models of PTCC-01 available: OEM, Basic and Advanced.

LabM series comes complete with PTCC-01 and Smart Manager is the best solution for prototyping and R&D stage in a variety of applications.

Image
Name
order
Optimal wavelength
λopt, µm
Optical area
A₀, mm×mm
Detectivity
D* (λopt), cm·Hz1/2/W
Output voltage responsivity
Rv (λopt, RL=50Ω), V/W
-3dB Bandwidth
Datasheet

UHMS Series

Many applications require high-time resolution or, equivalently, high frequency-bandwidth optical detection.

For these applications, VIGO developed ultra-high-speed detection modules series.

It  was necessary to apply a special design, both in term electronics and mechanics. The system was designed to suport the propagation of high-speed signals, mounting the detector to the enclosure as close ad possible to a PCB board and input circuits. The manufacturing process requires fine tuning of the circuit with a specific detector.

Additionally, it has DC monitor. It is a DC coupled signal, taken directly from the 1st stage preamplifier. One should take into account the 1 VDC offset at the DC monitor output.

This output may be used for:

  • measure of the mean optical power by the detector,
  • photodetector’s dark current monitoring.

UHSM is the one of the fastest long-wavelength infrared detection modules series on the market. 

There are two models of ultra-high-speed detection modules:

Both optimized for operation in the spectral range from 3 um to 12 um: 

optically immersed – with frequency bandwidth from 300 Hz to over 700 MHz

and without immersion microlens – with frequency bandwidth from 300 Hz to over 1.3 GHz.

The main applications of this kind modules are: Dual-comb spectroscopy, Heterodyne detection, Characterization of pulsed laser sources, LIDARs, Object scanners, Time-resolved fluorescence spectroscopy systems, Free-space communication and Telemetry.

Image
Name
order
Optimal wavelength
λopt, µm
Optical area
A₀, mm×mm
Detectivity
D* (λopt), cm·Hz1/2/W
Output voltage responsivity
Rv (λopt, RL=50Ω), V/W
-3dB Bandwidth
Datasheet

MicroM Series

MicroM is a micro-size detection module with uncooled photovoltaic multiple junction detector. It is optimized for operation in the spectral range from 2 um to 12 µm and frequency bandwidth from DC to 10 MHz

It is easy to assembly in space limited measuring systems of long wavelength infrared applications.

Image
Name
order
Optimal wavelength
λopt, µm
Optical area
A₀, mm×mm
Detectivity
D* (λopt), cm·Hz1/2/W
Output voltage responsivity
Rv (λopt, RL=50Ω), V/W
-3dB Bandwidth
Datasheet

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