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Spectroscopy Links Introduction Monochromator Specification Table Spectrometer Throughput & Etendue Optical Signal-to-Noise Ratio and Stray Light Relationship Between Wavelength & Pixel Position on an Array Entrance Optics Holographic Gratings Slit Options I need higher resolution I need a larger aperture I need a single channel detector I need a source OEM Links OEM Products Gratings Spectrographs Monochromators Detectors Assemblies Design Downloads H20 pdf Choosing a Spectrometer pdf Tell me more Request Product Information   A Compact High Luminosity Monochromator The use of a concave aberration corrected holographic grating simplifies the optical configuration of the H-20 monochromator in comparison to conventional monochromators. The collimating and focusing mirrors are in fact eliminated, bringing many advantages, including flexibility of use, maximum level of transmission and high spectral purity. Typical Applications Variable filter. Absorption/transmission. Fluorescence applications. Laser diode characterisation. Spectroscopic studies. Fibre optics characterisation.   High Spectral Purity The use of holographic gratings gives the H-20 a very low stray light level and no ghosts. Signal to noise ration is therefore optimum. Wide Range of Accessories When designing complete high performance optical configurations, the accessories are easy to set up and use. The modular design of the H-20 and its accessories provides the user with a versatile easy to use instrument system. Optional Stepper Motor System For automatic scanning and computer control. Resolution Typically 0.5 nm at 500nm. Slits Fixed width, interchangeable inserts, height continuously adjustable. OEM Its compact design is ideal for prototype designs and OEM work, as well as research and breadboard systems. Specifications: 5 versions available - FUV, UV, VIS, IR and FIR. Gratings are not interchangeable. Version FUV UV VIS IR FIR Focal Length 200mm Spectral Range 100-500nm 200-750nm 350-800nm 0.4-1.6µm 0.8-3.2µm Aperture F/4.2 Dispersion 4nm/mm 8nm/mm 16nm/mm Resolution 0.5nm 1nm 2nm Grating 1200g/mm 600g/mm 300g/mm Stray Light 10-5 at 8 bandpasses from 632.8nm laser line with 1mm slits Reproducibility +/- 0.25nm Slits Interchangeable fixed slits 0.5mm, 1mm and 2mm wide Dimensions 339 x 84mm Weight 3.2 kg Control Manual or motorised Optional RS232 or IEEE488 interfaces Windows or DOS software

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