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LTB Lasertechnik Berlin GmbH
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  5. LTB - Model Demon - Double Echelle ...

LTB - Model Demon -Double Echelle Monochromator

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High spectral resolution Double Echelle Monochromator series in Littrow configuration for the measurement of emission and absorption lines from the UV up to the NIR range.

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  • High absolute wavelength accuracy
  • High spectral resolution (60,000-200,000)
  • High optical throughput
  • Suitable with various detectors (CCD, ICCD, InGaAs)
  • Motorized optomechanics
The DEMON is a spectral high-resolution Double Echelle MONochromator. It consists of an optomechanically motorized and thermally robust echelle spectrometer in sequence with a prism monochromator that is used for the selection of the inspection range. The patented optical design of prism and echelle grating is arranged in Littrow configuration and benefits from the high image quality of the applied parabolic mirror optics. The width of the prism monochromator exit slit, which serves also as entrance slit of the echelle spectrometer, is adjustable. An active wavelength stabilization is provided by using the internal calibration lamp for highest absolute wavelength accuracy without the necessity of extensive temperature stabilization.

By applying reflection optics with broadband UV layers and a CaF2 prism, chromatic aberrations are avoided and thus a large wavelength range from the UV to the NIR is provided. The light coupling into the DEMON spectrometer is realized via SMA fiber or reflection transfer optics. Various CCD, ICCD and InGaAs cameras are suitable for the designed detection area.

The supplied operating software Sophi with optional LabVIEW library for complete remote control of the DEMON allows fully access of all spectrometer-detector functions via graphic user interface and provides automated measurement routines with an integrated scripting language. All measured spectra are automatically plotted for comprehensive analysis that can easily be performed with Sophi.