红外光电探测器 IR detectors

美国佳德森公司创建于1969年他在设计和生产高性能红外探测器处于世界领先地位。主要产品有Ge, InGaAs, InAs, InSb, PbS, PbSe and HgCdTe探测器。广泛应用于光纤，热成像，气体分析，激光探测，热辐射仪，红外光谱仪等应用。

Teledyne Technologies’ Acquisition of Judson Technologies, LLC

About Teledyne Technologies Incorporated
Teledyne Technologies is a leading provider of sophisticated electronic components, instruments and communication products, systems engineering solutions, aerospace engines and components and on-site gas and power generation systems. Teledyne Technologies has operations in the United States, the United Kingdom, Mexico and Canada. For more information, visit Teledyne Technologies’ website at www.teledyne.com.

Manufacturer of IR detectors including Ge, InGaAs, InAs, InSb, PbS, PbSe and HgCdTe single elements, quads and linear arrays and accessories including thermoelectric, closed-cycle and Joule-Thomson cooling systems for fiber optics, thermal imaging, gas analysis, laser monitoring, radiometry, spectroscopy and laser detection applications

>>锗探测器（Ge) J16 Series detectors are high-quality Germanium photodiodes designed for the 800 to 1800nm wavelength range.

Applications:
Optical Power Meters
Fiber Testing
Laser Diode Control
Optical Communications
Temperature Sensors

探测器的选择：Device Selection

Two key factors to consider when selecting a Judson Ge detector are
detector operating temperature and detector active area.

1. Detector Temperature: Cooling the detector reduces dark current and increases the shunt resistance RD (Fig. 9). Shunt resistance data at 25°C is listed on the specification table. The data can be applied to Figure 9 to estimate RD for detector temperatures from -40 to +60°C.

2. Active Area: Larger active areas have lower shunt resistance RD (Fig. 10), and therefore higher dark currents. When low noise is critical, the smallest detector acceptable for the application should be selected. Focusing optics may be added for increased light collection.

>>双色探测器 J16Si Dual Wavelength "Sandwich" Detectors

双色红外测温探测器包含两个不同波长光电探测器，垂直集成在一个密封封装内。
典型应用：
·双波长光功率表
·双色红外测温传感器
·比色测温仪
·火焰温度传感器
·分光光度计
·双波长探测器
·IR温度计，应用于热处理，感应加热，以及其它金属材料处理
它通常应用于非接触温度测量，它通过两个相邻波长的辐射强度比率以及它们同标准黑体辐射曲线的比较来测量温度。这种测量方法的优势是不受目标发射率的变化影响，以及不受被测区域污染物或者移动目标的影响。另外视线以外的、存在RF/EMI干扰的以及真空区域的目标的测量是可能的。它们也在克服目标视域障碍、大气烟雾、水蒸气、窗口污染、小目标或者移动目标的测量方面，具有优势。

2、Silicon-Ge 双色探测器：硅光电管放置在上面响应光谱400 nm to 1000 nm.1.1μm以上波长被Ga光电探测器测到。
所有的器件采用光电响应设计，不需要偏置。它们很理想地耦合到一个电流模式的运算放大器。

Two color detectors consist of a high performance silicon detector mounted in a "sandwich" configuration over another detector. The silicon photodiode responds to radiation from 400 nm to 1000 nm. Longer wavelengths pass through the silicon and are detected by the detector underneath. J16Si Series detectors are ideal for optic power measurements that need to differentiate between 800 nm and either 1300 nm or 1550 nm. They are also useful for two-color temperature measurements. The J14SI Series are used when the temperature measurement range needs to be expanded.

Applications
- Dual-Wavelength Power Meters
- Wavelength Demultiplexers
- Pyrometers

Detector Temperature Ranges
J16Si: 500C to 2000C
J14Si: 22C to 2000C

>>铟镓砷探测器(InGaAs)

光谱范围：0.8μm to 2.6μm.它特点是结电容小，低噪音，暗电流小，响应速度快。如果经过制冷之后其噪音更低，输出的D*会更高。它主要用于近红外光谱分析，比如测量水分和中低温的温度辐射计。

The J22 and J23 Series detectors are high performance InGaAs detectors operating over the spectral range from 0.8μm to 2.6μm.

Applications

Gas analysis
NIR-FTIR
Raman spectroscopy
IR fluorescence
Blood analysis
Optical sorting
Radiometry
Chemical detection
Optical communication
Optical power monitoring
Laser diode monitoring
Laser burn-in

>>硫化铅探测器(PbS) The J13 Series detectors are Lead Sulfide (PbS) photoconductive (PC) detectors designed for operation in the 1-3.5μm wavelength region.

Applications

NDIR Spectroscopy
Optical Pyrometry
Flame Spectroscopy
Moisture Analyzers

>>硒化铅探测器（PbSe) The J14 Series detectors are Lead Selenide (PbSe) photoconductive (PC) detectors designed for operation in the 2-6 μm wavelength region

Applications

Environmental Gas Analysis
Medical Gas Analysis
Flame Spectroscopy
Optical Pyrometry
NDIR Spectroscopy
Defense Applications

中波红外(3~5 μm)锑化铟(InSb)、碲镉汞探测器(HgCdTe测器(HgCdTe)

远红外(16 μm以上)量子阱探测器(QWIP)

MCT

MCT (HgCdTe) photoconductive detectors have a decreasing resistance with increasing infrared light. The spectral response of HgCdTe can be changed by adjusting the stochiometry of the detector. Peak sensitivity can vary from 3.6 μm to 17 μm, while the cut-off wavelength can vary from 5.5 μm to 22 μm. The detectors can be cooled using either thermoelectric coolers, liquid nitrogen dewars and Stirling engine coolers. Custom devices are also available with different active areas and arrays with different number of elements.

热电堆

热探测器是利用探测元吸收入射光辐射，产生热，而引起温升，再借助各种物理效应把温升转变成电量的探测器。

热探测器与前述的各种光电器件相比具有下列特性：（1）响应率与波长无关，属无选择性探测器；（2）受热时间常数的制约响应速度慢；（3）其探测率比光子探器的峰值探测率低；（4）可在室温下工作。