Pyroelectric Array Camera

Pyrocam

Pyrocam™ III & Pyrocam IV Series

  • Spectral ranges available from 13 to 355 nm and 1.06 to >3000 μm
  • Image CO2 lasers, telecom NIR lasers and other infrared sources out to Far IR THz sources
  • Solid state array camera with 1000:1 linear dynamic range for accurate profiling
  • Integrated chopper for CW beams and thermal imaging
  • Interchangeable windows available for a variety of applications
  • Includes BeamGage Laser Beam Analysis Software for quantitative analysis and image display
Description
Specifications
Ordering Info
Catalog/Manual
Download Data Sheet.
PyroCam III (Solidworks)
PyroCam III C-Mount Adaptor (Solidworks)
PyroCamIV (Solidworks)
PyrocamTM III & Pyrocam IV Series
Spiricon has been the world leader in the manufacture of pyroelectric solid-state detector arrays and cameras. For over 25 years the Pyrocam™ has been the overwhelming camera of choice for Laser Beam Diagnostics of IR and UV lasers and high temperature thermal imaging. Precision, stability, reliability, and versatility have become its proud heritage.

The Pyrocam™ III offers a 1/2X1/2 inch detector array with easy Windows ® camera setup, direct Windows quantitative and image display, 14 bit digitizer, versatile Firewire® PC interface, and an integral chopper for CW beams and thermal imaging.

The Pyrocam IV offers a 1 inch by 1 inch detector array with easy Windows® camera setup and quantitative image display through the BeamGage software, 16 bit digitizer, high-speed Gigabit Ethernet PC interface, and an integral chopper for CW beams and thermal imaging.
See Your Beam As Never Before
Both Pyrocam cameras create clear and illuminating images of your laser beam profile. Displayed in 2D or 3D views, you can immediately recognize beam characteristics that affect laser performance and operation. This instantly alerts you to detrimental laser variations. Instantaneous feedback enables timely correction and real-time tuning of laser parameters. For example, when an industrial shop foreman saw the CO2 laser beam profile in Figure 1 he knew immediately why that laser was not processing materials the same as the other shop lasers, that had similar profiles shown in Figure 2.
Fig. 1. Industrial CO2 laser beam profile performing inconsistent processing. Fig. 2. Beam profile of industrial CO2 laser making consistently good product.
Fig. 1. Industrial CO2 laser performing inconsistent processing. Fig. 2. Beam profile of industrial CO2 laser making consistently good product.
 
Pulsed and CW Lasers
The Pyrocams measure the beam profile of both pulsed and CW lasers. Since the pyroelectric crystal is an integrating sensor, pulses from femtosecond to 12.8ms can be measured. The pyroelectric crystal only measures changes in intensity, and so is relatively immune to ambient temperature changes. Because CW laser beams must be chopped to create a changing signal, the Pyrocam contains an integral chopper, as an option.
Measuring Terahertz Beam Profiles
Spiricon's Pyrocam pyroelectric cameras are an excellent tool for measuring THz lasers and sources. The coating of the crystal absorbs all wavelengths including 1μm to over 3000μm (0.1THz to 300THz). For THz sources the sensitivity of the Pyrocam is relatively low, at about 3mW/cm² at full output. With a S/N of 1000, beams of 30mW/cm² are easily visible. In addition, with Spiricon's patented Ultracal baseline setting, multiple frames can be summed to "pull" a signal out of the noise. Summing 256 frames enables viewing of beams as low as 1-2mW/cm².
Pyrocam III imaging THz laser beam profile at 0.2THz (1.55mm) 3mW input power; 19 frames summed Pyrocam IV imaging THZ laser beam profile 0.5 THz (5mm) 5mW input power; single frame.
Pyrocam III imaging THz laser beam at 0.2THz (1.55mm) 3mW input power; 19 frames summed Pyrocam IV imaging THZ laser beam 0.5 THz (5mm) 5mW input power; single frame
 
Broad Wavelength Response
The Pyrocam detector array has a very broadband coating which enables operation at essentially all IR and UV laser wavelengths. The curve ends at 100nm in the UV, but X-ray operation has been observed. Likewise the curve ends at 100μm in the far IR, but the camera has been used at >3000μm.
Fig. 6. Spectral response of PyrocamTM III detector array without window.
Fig. 6. Spectral response of PyrocamTM III detector array without window.
Thus you can use the Pyrocam in the near IR for Nd:YAG lasers at 1.06μm, and for infrared fiber optics at 1.3μm and 1.55μm. Use the Pyrocam for HF/DF lasers near 4μm and for Optical Parametric Oscillators from 1 μm to 10μm. It measures Free Electron Lasers between 193μm and 3000μm.
Broad Wavelength Response laser beam profile
The Pyrocam is extremely useful in the UV from 355nm to 157nm for Excimer lasers and for tripled or quadrupled Nd:YAG lasers. The detector is stable under UV illumination, without the deterioration experienced by CCD cameras. (The pyroelectric detector operates in the visible spectrum, and can see the alignment HeNe used with CO2 lasers. However, spurious response from the underlying silicon multiplexer creates undesirable performance, and the camera is not recommended for quantitative visible measurements).
Windows® PC Interface
The Pyrocam™ III Windows application incorporates setup software to control all functions of the camera, such as pulsed versus chopped operation, gain, and background reference subtraction, eliminating all controls from the camera housing.
Windows® PC Interface
Pyrocam™ III Windows setup menu
 
This interface is not needed when using the Pyrocam IV.
BeamGage Image Analysis Software
Both Pyrocams come bundled with BeamGage, the state-of-the-art beam profiling system that performs rigorous data acquisition and analysis of laser beam parameters, such as beam size, shape, uniformity, divergence, mode content, and expected power distribution. Once the Pyrocam is connected to the PC and BeamGage is running, the software automatically detects the camera presence and is immediately ready to start taking images and displaying them on the monitor.
BeamGage recognizes the Pyrocam IV and allows you to quickly start analyzing your laser beam profile
BeamGage recognizes the Pyrocam IV and allows you to quickly start analyzing your laser beam
BeamGage is the industry's first beam profiling software to be newly designed, from scratch, using the most advanced tools and technologies. BeamGage is based on UltraCal™, Spiricon's patented baseline correction algorithm that helped establish the ISO 11146-3 standard for beam measurement accuracy. BeamGage provides high accuracy results, guaranteeing the data baseline (zeropoint reference) is accurate to 1/8th of a digital count on a pixel-by-pixel basis.

BeamGage permits the user to employ custom calculations for best fit to an individual application. These user-defined computations are treated like the standard calculations. They can be displayed on the monitor, logged with results, and included in hard-copy reports. The system also allows the user to configure the displayed calculations, set-up the screen layout, and password-protect the configuration. This permits secure product testing, ensures security in production environments where plant floor personnel interface with the system, and assures the validity of the data for Statistical Process Control (SPC).
Hybrid Integrated Circuit Sensor
The Pyrocam consists of a LiTa03 pyroelectric crystal mounted with indium bumps to a solid-state readout multiplexer. This sensor, developed as the Company's core technology for the Pyrocam I, has proven to be the most rugged, stable, and precise IR detector array available. Light impinging on the pyroelectric crystal is absorbed and converted to heat, which creates charge on the surface. The multiplexer then reads out this charge. For use with short laser pulses, the firmware of the camera creates a very short electronic shutter to accurately capture the thermally generated signal.
PyrocamTM III sensor array and window assembly PyrocamTM III sensor array and window assembly
Pyrocam™ III sensor array and window assembly Pyrocam IV 25mm X 25mm array
State-Of-The-Art Electronics
The camera features a high resolution A/D converter which digitizes deep into the camera noise. This enables reliable measurement and analysis of both large signals and low level signals in the wings of the laser beam. High resolution digitizing also enables accurate signal summing and averaging to pull weak signals out of noise. This is especially useful with fiber optics at 1.3μm and 1.55μm, and in thermal imaging.
Applications Of The Pyrocam™
The Pyrocam is an ideal camera for use in scientific laboratory investigation of laser beams. This includes physics, chemistry, and electronic system designs. As an example, the photos below show a research CO2 laser and a research Nd:YAG laser, both with cavity misalignment.

The camera is also useful in product engineering of CO2 and other infrared lasers. The Pyrocam is an integral part of the assembly lines of many CO2 laser manufacturers. Integrators of systems are using the Pyrocam sensor to make sure that optical systems are aligned and operating properly.
CO2 laser with cavity misalignment. Nd:YAG laser with cavity misalignment.
CO2 laser with cavity misalignment. Nd:YAG laser with cavity misalignment.
 
There are many medical applications of the Pyrocam, such as the analysis of excimer lasers used for eye surgery. In many cases these lasers need alignment to ensure that the eye surgery is performed as expected. Other medical IR lasers perform dermatology, for which the uniformity of the beam profile must be assured.

Fiber optic communications, at 1.3μm and 1.55μm make significant use of the Pyrocam for analyzing the beams being emitted, as well as analyzing properties of the beams before launching them into fibers. The greater stability of the Pyrocam make it a good choice over other cameras operating at telecommunication wavelengths.
CO2 laser beam profile with cavity misalignment. Nd:YAG laser beam profile with cavity misalignment.
CO2 laser with cavity misalignment. Nd:YAG laser with cavity misalignment.
 
The Pyrocam is becoming an essential tool in the maintenance of industrial infrared lasers, especially CO2. The Pyrocam replaces non-electronic mode burns and acrylic blocks by providing higher definition electronic recording of data, and analysis of short term fluctuations. The Pyrocam is superior to other electronic methods of measuring CO2 lasers because the entire beam can be measured in a single pulse, and additional measurements made in real-time. This ensures that the beam did not change during the measurement.
Detector Damage Threshold
The Pyrocam sensor is capable of operation with intensities about 100 times greater than CCD cameras. This makes the camera ideal for use with high power lasers, as less attenuation is required. Nevertheless, pulsed lasers with fluence too high can evaporate the absorbing front electrode.
Pulsed damage threshold of pyroelectric detector coating.
Pulsed damage threshold of pyroelectric detector coating.
As shown the damage threshold increases with pulse width. With nanosecond and longer pulses, detector saturation occurs before damage. With shorter pulses it helps to increase the camera amplifier gain so that electronic saturation occurs before damage.

The sensor can be damaged by excessive CW power, which causes crystal cracking. Very few Pyrocam detectors have been damaged by CW power, but some have been ablated by high peak pulse energy.

Software 32/64 Bit Compatibility

Pyrocam III Dimensions
  Pyrocam III Pyrocam IV Pyrocam IVs
Application UV and IR UV and IR UV and IR
Spectral response 13 - 355nm 13 - 355nm 13 - 355nm
  1.06 - 3000µm 1.06 - 3000µm 1.06 - 3000µm
Interchangeable windows See selection in Ordering section See selection in Ordering section See selection in Ordering section
Detector array details      
Active area 12.4mm x 12.4mm 25.6mm x 25.6mm 12.8mm x 12.8mm
Element spacing 100µm x 100µm 80μm x 80μm 80μm x 80μm
Number of elements 124 x 124 320 x 320 160 x 160
Pixel size 85µm x 85µm 75μm x 75μm 75μm x 75μm
CHOPPED CW OPERATION
Chopping Frequencies 24Hz, 48Hz 25Hz, 50Hz 25Hz, 50Hz
Sensitivity (RMS noise limit) 220 nW/pixel (24Hz) 64nW/pixel (25Hz) 64nW/pixel (25Hz)
  320 nW/pixel (48Hz) 96nW/pixel (50Hz) 96nW/pixel (50Hz)
  2.2 mW/cm² (24Hz) 1.0mW/cm² (25Hz) 1.0mW/cm² (25Hz)
  3.2 mW/cm² (48Hz) 1.5mW/cm² (50Hz) 1.5mW/cm² (50Hz)
Noise equivalent power (NEP) 45 nW/Hz¹/²/pixel (1Hz) 13nW/Hz¹/²/pixel (1Hz) 13nW/Hz¹/²/pixel (1Hz)
Saturation Power 2.2W/cm²(24Hz) 3.0W/cm²(25Hz) 3.0W/cm²(25Hz)
  3.2W/cm² (48Hz) 4.5W/cm² (50Hz) 4.5W/cm² (50Hz)
Damage Threshold Power      
Over Entire Array 2W 2W 2W
Peak Power Density 8W/CM² (Chopped mode)
4W/CM² (CW in pulsed mode)
8W/CM² (Chopped mode)
4W/CM² (CW in pulsed mode)
8W/CM² (Chopped mode)
4W/CM² (CW in pulsed mode)
PULSED OPERATION
Laser pulse rate   Single-shot to 1000Hz Single-shot to 1000Hz
Pulse width 1fs - 12.8ms 1fs - 12.8ms 1fs - 12.8ms
Sensitivity (peak noise limit) 7nJ/pixel 0.5nJ/pixel 0.5nJ/pixel
  70µJ/cm² 8μJ/cm² 8μJ/cm²
Saturation energy 10mJ/cm² 15mJ/cm² 15mJ/cm²
Damage threshold 20mJ/cm² (1ns pulse) 20mJ/cm² (1ns pulse) 20mJ/cm² (1ns pulse)
  600mJ/cm² (1 µs pulse) 600mJ/cm² (1 µs pulse) 600mJ/cm² (1 µs pulse)
Trigger input      
High logic level 3.0 - 6.0V DC 3.0 - 6.0V DC 3.0 - 6.0V DC
Low logic level 0 - 0.8V 0 - 0.8V 0 - 0.8V
Pulse width 4μs min 4μs min 4μs min
OPERATING CONNECTIONS AND CONDITIONS
Power 120-240 VAC 12VDC 12VDC
Line frequency 60/50Hz External Supply 60/50Hz External Supply 60/50Hz External Supply
Power consumption 10W 12W 12W
Operating temperature 5°C to 50°C 5°C to 50°C 5°C to 50°C
PHYSICAL      
Case Dimensions 140mm H X 130mm W X 60mm D 147.3mm H X 147.1mm W X 55.2mm D 147.3mm H X 147.1mm W X 55.2mm D
Detector Position Centered in width 53.8mm from bottom left 53.8mm from bottom left
  35.6mm from bottom 36.8mm from bottom 36.8mm from bottom
  15.2mm behind front cover (without included C-mount attached) 19.7mm behind front cover 19.7mm behind front cover
Weight 1.52Kg (3.25lbs) 1.2kg (2.65lbs); not including power supply 1.2kg (2.65lbs); not including power supply
PC interface Two Firewire® interface ports (IEEE 1394a) Gigabit Ethernet (IEEE 802.3ab), GigE Vision compliant Gigabit Ethernet (IEEE 802.3ab), GigE Vision compliant
MEASUREMENTS PERFORMED
Windows imaging viewer Total power or energy in digital counts or calibrated in software    
  Peak power or energy in digital counts or calibrated in software    
  Peak location in µm    
  Centroid location in µm    
  Diameter at 1/e2 points in µm    
  X & Y Knife edge beam widths in µm    
Using BeamGage Extensive set of quantitative and image display capabilities. Extensive set of quantitative and image display capabilities. Extensive set of quantitative and image display capabilities.
  See BeamGage data sheet. See BeamGage data sheet. See BeamGage data sheet.
Array Quality      
  Grade A Up to 50 bad pixels, all correctable Grade A <300bad pixels, all correctable Grade A Up to 50 bad pixels, all correctable
  No uncorrectable clusters No uncorrectable clusters No uncorrectable clusters
  Grade B Up to 100 bad pixels    
  No uncorrectable clusters within the 70% central area, no more than 2 outside    

Cameras are part of a Laser Beam Analysis System
the camera and software are sold as a package

      Item Description P/N  
     
Pyrocam III Beam Profiler Systems  
         
  PY-III-P-A Pyroelectric array detector, pulsed only, Grade A, two FireWire ports, and basic viewer software. BeamGage Standard included. To complete this order, you must add an Interchangeable Window part number to accompany this system (see below). SP90090  
         
  PY-III-P-B Pyroelectric array detector, pulsed only, Grade B, two FireWire ports, and basic viewer software. BeamGage Standard included. To complete this order, you must add an Interchangeable Window part number to accompany this system (see below). SP90091  
         
  PY-III-C-A Pyroelectric array detector, chopped and pulsed, Grade A, two FireWire ports, and basic viewer software. BeamGage Standard included. To complete this order, you must add an Interchangeable Window part number to accompany this system (see below). SP90092  
         
  PY-III-C-B Pyroelectric array detector, chopped and pulsed, Grade B, two FireWire ports, and basic viewer software. BeamGage Standard included. To complete this order, you must add an Interchangeable Window part number to accompany this system (see below). SP90093  
         
  Interchangeable Windows for Pyrocam III (one included free with the purchase of a Pyrocam III Beam Profiler System)  
         
  PY-III-W-BK7-1.064 Pyrocam III Window BK7 A/R coated to 1064nm SP90101  
         
  PY-III-W-Si-1.05-2.5 Pyrocam III Window Silicon A/R coated to 1.05 - 2.5μm SP90102  
         
  PY-III-W-Si-2.5-4 Pyrocam III Window Silicon A/R coated to 2.5 - 4μm SP90103  
         
  PY-III-W-Ge-3-5.5 Pyrocam III Window Germanium A/R coated to 3 - 5.5μm SP90104  
         
  PY-III-W-Ge-10.6 Pyrocam III Window Germanium A/R coated to 10.6μm SP90105  
         
  PY-III-W-Ge-8-12 Pyrocam III Window Germanium A/R coated to 8 - 12μm SP90106  
         
  PY-III-W-ZnSe-10.6 Pyrocam III Window Zinc Selenide A/R coated to 10.6μm SP90107  
         
  PY-III-W-ZnSe-2-5 Pyrocam III Window Zinc Selenide A/R coated to 2 - 5μm SP90108  
         
  PY-III-W-Poly-THz Pyrocam III Window Polyethylene uncoated for Tera-Hz wavelengths SP90208
         
Pyrocam IV Beam Profiler Systems  
         
  PY-IV-C-A Pyroelectric array detector, choppend and pulsed, Grade A, one Gigabit Ethernet port and BeamGage Standard included. To complete this order, you must add an Interchangeable Window part number to accompany this system (see below). SP90296  
         
Interchangeable Windows for Pyrocam IV (one included free with the purchase of a Pyrocam IV Beam Profiler System)
         
  PY-IV-W-BK7-1.064 Pyrocam IV window assembly, BK7, A/R coated for 1.064μm SP90301  
         
  PY-IV-W-SI-1.05-2.5 Pyrocam IV window assembly, Si, A/R coated for 1.05 to 2.5μm SP90302  
         
  PY-IV-W-SI-2.5-4 Pyrocam IV window assembly, Si, A/R coated for 2.5 to 4μm SP90303  
         
  PY-IV-W-GE-3-5.5 Pyrocam IV window assembly, Ge, A/R coated for 3 to 5.5μm SP90304  
         
  PY-IV-W-GE-10.6 Pyrocam IV window assembly, Ge, A/R coated for 10.6μm SP90305  
         
  PY-IV-W-GE-8-12 Pyrocam IV window assembly, Ge, A/R coated for 8 to 12μm SP90306  
         
  PY-IV-W-ZNSE-10.6 Pyrocam IV window assembly, ZnSe, A/R coated for 10.6μm SP90307  
         
  PY-IV-W-ZNSE-2-5 Pyrocam IV window assembly, ZnSe, A/R coated for 2 to 5μm SP90308  
         
  PY-IV-W-ZNSE-UNCOATED Pyrocam IV window assembly, ZnSe, uncoated SP90336  
         
  PY-IV-W-POLY-THZ Pyrocam IV window assembly, LDPE, uncoated for Terahertz wavelengths SP90309  
         
Pyrocam IVs Beam Profiler Systems
         
  PY-IVS-C-A Pyroelectric array detector, choppend and pulsed, Grade A, one Gigabit Ethernet port and BeamGage Standard included. To complete this order, you must add an Interchangeable Window part number to accompany this system (see below). SP90347  
         
Interchangeable Windows for Pyrocam IVs (one included free with the purchase of a Pyrocam IVs Beam Profiler System)
         
  PY-IVS-W-BK7-1.064 Pyrocam IVs window assembly, BK7, A/R coated for 1.064μm SP90337
         
  PY-IVS-W-SI-1.05-2.5 Pyrocam IVs window assembly, Si, A/R coated for 1.05 to 2.5μm SP90338
         
  PY-IVS-W-SI-2.5-4 Pyrocam IVs window assembly, Si, A/R coated for 2.5 to 4μm SP90339
         
  PY-IVS-W-GE-3-5.5 Pyrocam IVs window assembly, Ge, A/R coated for 3 to 5.5μm SP90340
         
  PY-IVS-W-GE-10.6 Pyrocam IVs window assembly, Ge, A/R coated for 10.6μm SP90341
         
  PY-IVS-W-GE-8-12 Pyrocam IVs window assembly, Ge, A/R coated for 8 to 12μm SP90342
         
  PY-IVS-W-ZNSE-10.6 Pyrocam IVs window assembly, ZnSe, A/R coated for 10.6μm SP90343
         
  PY-IVS-W-ZNSE-2-5 Pyrocam IVs window assembly, ZnSe, A/R coated for 2 to 5μm SP90344
         
  PY-IVS-W-POLY-THZ Pyrocam IVs window assembly, LDPE, uncoated for Terahertz wavelengths SP90345
  Beam Profilers Beam Profilers Catalog
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