Glacier® X 高性能光譜儀(含電子制冷器)

Technical     Details

Fiber  Coupler

     Secures Fiber to Ensure Repeatable Results

By coupling a fiber optic to the SMA 905 adaptor, light will be guided to the slit and optically matched, ensuring reproducibility.  For free space sampling, a diffuser or lens assembly can be connected directly to the SMA 905 adaptor.

   Collimates and Redirects Light Towards Grating

Both mirrors are f/# matched focusing mirrors coated with AlMg2, which produces approximately 95% reflectance when working in the UV-Vis spectrum.  Aluminum (Al) provides reflectance and magnesium (Mg2) protects the aluminum from oxidation.

Focusing Mirror

   Refocuses Dispersed Light onto Detector

DetectorBoth mirrors are f/# matched focusing mirrors coated with AlMg,which produces approximately 95% reflectance when working in the UV-Vis spectrum. Aluminum (Al) provides reflectance and magnesium (Mg₂)

  Measures Entire Spectrum Simultaneously

The Glacier® X features a 2048 x 1 linear TE Cooled CCD array detector with a 14µm pixel width and > 2000 active pixels. As the incident light strikes the individual pixels across the CCD, each pixel represents a portion of the spectrum that the electronics can then translate and display with a given intensity using BWSpec™ software.

The quantum efficiency (QE) and noise level of the array detector greatly influences the spectrometer’s sensitivity, dynamic range and signal-to-noise ratio. The spectral acquisition speed of the spectrometer is mainly determined by the detector response over a wavelength region.

    Reduces Dark Noise and Increases Detection Limits

Cooling an array detector with a built-in thermoelectric cooler (TEC) is an effective way to reduce dark current and noise, as well as to enhance the dynamic range and detection limit.

When the CCD detector array is cooled from a room temperature of 25˚C down to 14˚C by the TEC, the dark current is reduced by a factor of 4 and the dark noise is reduced by a factor of 2. This allows the spectrometer to operate at longer exposure times and to detect weaker optical signals.