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 an 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) |