IR Labs is the global leader in highly sensitive and cost-effective cryogen-free and cryogenic bolometers for general research, high resolution and far-IR detection, and OEM applications.

Find the Product for Your Spectral Range

Spectral Chart for Bolomoters

Why Choose IR Labs?

We have supplied cooled IR bolometers and IR detectors to leading scientific organizations since 1967. We offer a full range of composite, silicon, hot electron, and germanium bolometers and photodetectors used for FTIR spectroscopy, high magnetic field research, terahertz research, molecular beam physics, and IR astronomy.

Highly sensitive: Our proven experience in cryogenics, electronics and optics sets the benchmark in sensitivity

Cost effective: Standard bolometers reduce project costs

Cryogen-free options: Eliminates needs for scarce and expensive liquid helium

Wide spectral range: Complete coverage of the IR spectral range

Customized configurations: Can be configured to meet specific application requirements including increased work height, dual detectors, filter positions and coupling optics

Product Comparison

Cryogen-Free Bolometers

Spectral Response (µm)

Operating Temp
(K)
Electrical Sensitivity (S[V/W] Noise Equivalent Power
[W/Hz(1/2)]
Noise
Vn[nV/Hz(1/2)]
Frequency Response
(Optimum Chopping Frequency)
Liquid Cryogen Cooling

Cryogen-free Cooling

General Purpose 4.2 K Bolometer System

15 – 2000

0.3 to 4.2 ~ 2.4 X 105 ~ 2.5 X 10-13 ≤ 80 at 80Hz < 500 Hz    
Hi Res 4.2K Bolometer System

15 – 2000

0.3 to 4.2 ~ 6.1 X 105 ~ 9 X 10-14 ≤ 40 at 80Hz < 200 Hz    
Standard 1.6 K Bolometer System

15 – 2000

1.6  ~ 7.5 X 105  ~ 4.6 X 10-14 ≤ 40 at 80Hz > 1 KHz    
Far-IR 1.6 K Bolometer System

15 – 2000

1.6 ~ 1.0 X 107  ~ 3.6 X 10-15 ≤ 50 at 80Hz < 300 Hz    

InSb Hot e-Bolometer

0.2mm – 5mm

4.2 > 4.0 X 103  < 8 x 10-13 < 4.0 at 200Hz < 600 kHz    
Photoconductors                
Si:B Photoconductor 5 – 30 4.2 SNR > 2.5 X 105 < 5.0 X 10-12 < 20µV/Hz(1/2) at 1kHz DC to 5kHz    
Ge:Ga Photoconductor 40-120 4.2 SNR > 2.5 X 105 < 5.0 X 10-11 < 10µV/Hz(1/2) at 1kHz DC to 5kHz    
Questions? Contact Us

Selecting Bolometers or Photoconductors

Our broad-bandwidth bolometers and doped photoconductors each offer advantages to best meet your spectral band, frequency response, noise, and budget requirements. We’re happy to discuss your application, requirements, and budget to determine the right fit for your needs.

Bolometer Systems

  • Broadest spectral range from LWIR to THz
  • Low signal-to-noise ratio
  • Cryogenic or cryogen-free cooling

Photoconductor

Photoconductor Systems

  • Spectral range from MWIR to far IR
  • Faster response times
  • Cryogenic or cryogen-free cooling

Selecting Liquid Cryogenic or Cryogen-Free Cooling

All detector types are cooled to cryogenic temperatures to reduce noise and increase sensitivity. Detectors can be cooled using pour-filled liquid cryogen dewars or cryogen-free mechanical refrigeration. 

Liquid Cryogenic Cooling

Liquid cryogen dewars are compact with no moving parts, easy to use, and have a lower initial cost. Recommended for simple, reliable operation:

  • Use LN2 and LHe
  • Simple, compact cooling solution
  • Lower cost of equipment
  • No mechanical noise and vibration
  • No bulky compressor and hoses
  • High reliability

Contact us to spec to cooling
Closed cycle bolometer

Cryogen-Free Cooling

Refrigerated systems are larger, more complex, and have a higher initial cost but eliminate the expense of refilling cryogens. Recommended for cost-effective, continuous unattended cold operation:

  • Uses mechanical refrigeration
  • No expensive LHe
  • Continuous operation with no refilling required
  • Reliable; no unexpected warmups
  • Acceptably low vibration in most cases

Contact us to spec cooling

Customize to Meet Your Unique Specifications

IR Labs offers a variety of standard optical components for integration on your IR detector system.

Bolomoter & IR Detector Options

Optical, Mechanical and Cryo/Vacuum Accessories

IR Labs offers a variety of standard optical components for integration on your IR detector system.

Accessories