LaserScan可以在相隔距离为6英寸到2英尺时探测并测量表面上的物质，可以定制更长的相隔距离。LaserScan基于物质吸收特性，识别大块材料及探测亚微米薄膜，也可以分析液体或者气体。这一器件的另一版本用于连接普通的FTIR配件，包括液体及气体电池，及反射配件。LaserScan使用近红外吸收光谱，系统核心为下一代的宽光谱可调谐量子级联式激光器。这使得LaserScan非常敏感，比普通光谱仪系统要敏感几个数量级。该系统有两个版本，一种快速调谐范围为6-10 μm，另一个是覆盖了 7-12 μm。
总结：
l 高灵敏度中红外吸收光谱分析仪，采用量子级联式激光光源
l 在秒量级对物质进行分析快速
l 可以分析大块固体、液体、气体
l 检测亚微米量级的薄膜，通常可以检测到50μm，依不同材料而异
l 可以检测的表面浓度低于2μg/cm2
l 可以测量扩散性的高吸收性物质
l 可以开放式比色皿中探测气体，浓度可在ppb量级
l 自由空间里的间隔距离光谱采样
l 具有FTIR或者光线耦合配件版本
特色：
l 可与FTIR相媲美，具有间隔距离采样、便携性、高灵敏度
l 毫秒量级的光谱扫描，200 KHz的脉冲式激光
l 目标样品无损伤，5-10 mm散焦光斑
l 人眼安全式操作
l 便携式、坚实外表、可远程通信
Continuous Wavelength
Coverage
LaserScan610: 6.25-10 μm (~1600-1000 cm-1)
LaserScan712: 7-12 μm (~1430-830 cm-1)
Measurement Time
A few seconds (minimum)
Laser Pulse Modulation
200 kHz (Insensitive to stray light)
SNR (100% line RMS noise)
0.1% (1000:1) (measured at 1100+/-50 cm-1)
Intensity Drift
<0.2% over 2hrs (100% line variation)
Wavelength Accuracy
<0.5 cm-1
Wavelength Precision
< 0.2 cm-1 over 2 hrs
Average Power
Typically varies between 0.5 mW and 10mW
across the 600 cm-1 tuning range
Beam Divergence
<5 mrad
Beam Diameter
2 x 4 mm Collimated
Polarization
TEM, 100:1 Extinction, Vertically Polarized
Spectral Resolution
Software Selectable 2, 4, 8 cm-1
Dimensions
25.4 x 20.3 x 12.7 cm (10 x 8 x 5 inches)
Weight
4.3 kg (9.5 lbs)
Operating Temp. Range
10 to 30 °C
Storage Temp. Range
-10 to 70 °C
Communication Interface
USB
Operating System
Win XP-SP3 or later
Electrical Interface
100-240 Volts (50/60 Hz) 2 Amp
Mechanical Interface
Collimated and centered IR output beam Standard
Configuration: 3-inch collection lens
(Other configurations available upon request)
Standoff Distance
Standard Configuration: 6 inches
(Other configurations available upon request)
Measurement Technique
Diffuse Reflectance
Spectral Acquisition
Built in acquisition of complete spectrum across
600 cm-1 range using built in detection system
Internal Detector
TE cooled MCT (no LN2 required) |
