焦热电阵列相机

Pyroelectric Array Camera

Pyrocam™ III 系列

  • 光谱范围从 13 到 355 nm和 1.06 到 >3000 µm
  • 轮廓 CO2 激光器,电信 NIR 激光器及其它红外源到远红外太赫兹源
  • 固态阵列相机线性动态范围 1000:1 用于精确轮廓分析
  • 整体式斩波器用于 CW 光束和热成像
  • 多用途火线接口
  • 可提供可互换的窗口用于各种应用
  • 成像观察工具能呈现 3D 立体图、2D 彩色轮廓图和灰度以及其它视图
  • 包括可进行广泛的定量分析和成像显示的“BeamGage激光光束分析软件”
Description
Specifications
Ordering Info
Catalog/Manual
Download Data Sheet.
Spiricon has been the world leader in the manufacture of pyroelectric solid-state detector arrays and cameras. For over 25 years the PyrocamTM 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 PyrocamTM 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 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 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.
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.
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
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 PyrocamTM 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
PyrocamTM 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
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
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™ Ill
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 with cavity misalignment. Nd:YAG laser 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.
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
Application UV and IR
Spectral response 13 - 355nm
  1.06 - 3000µm
Interchangeable windows See selection in Ordering section
Detector array details  
Active area 12.4mm x 12.4mm
Element spacing 100µm x 100µm
Number of elements 124 x 124
Pixel size 85µm x 85µm
CHOPPED CW OPERATION  
Chopping Frequencies 24Hz, 48Hz
Sensitivity (RMS noise limit) 220 nW/pixel (24Hz)
  320 nW/pixel (48Hz)
  2.2 mW/cm2 (24Hz)
  3.2 mW/cm2 (48Hz)
Noise equivalent power (NEP) 45 nW/Hz¹/²/pixel (1Hz)
Saturation Power 2.2W/cm2(24Hz)
  3.2W/cm2 (48Hz)
Damage Threshold Power  
Over Entire Array 2W
Peak Power Density 8W/cm2
PULSED OPERATION  
Laser pulse rate Single-shot to 1000Hz
Pulse width 1fs - 12.8ms
Sensitivity (peak noise limit) 7nJ/pixel
  70µJ/cm2
Saturation energy 10mJ/cm2
Damage threshold 20mJ/cm2 (1ns pulse)
  600mJ/cm2 (1 µs pulse)
Trigger input  
High logic level 3.0 - 6.0V
Low logic level 0 - 0.8V
Pulse width 4μs min
OPERATING CONNECTIONS AND CONDITIONS  
Power 100-240 VAC
Line frequency 60/50Hz External Supply
Power consumption 10W
Operating temperature 5°C to 50°C
PHYSICAL  
Case Dimensions 140mm H X 130mm W X 60mm D
Detector Position Centered in width
  35.6mm from bottom
  15.2mm behind front cover (without included C-mount attached)
Weight 1.52Kg (3.25lbs)
PC interface Two Firewire® interface ports (IEEE 1394a)
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.
  See BeamGage data sheet.
Array Quality  
  Grade A Up to 50 bad pixels, all correctable
  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
  Beam Profilers Beam Profilers Catalog
107 pages (8.12 MB )
  Beam Cube Pyrocam III user manual
64 pages (1.01 MB )
  Beam Cube LBA-PC (700, 708 ,710 ,712 ,714) user manual
281 pages (2.8 MB )
  Beam Cube BeamGage User Guide
149 pages (5.24 MB )