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THR640 Spectrograph / Monochromator

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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

Ruled Gratings

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THR640 System

Good image quality, high throughput, extended scanning range allows use of higher groove density gratings increasing dispersion. Competes well against 1m monochromators where space and/or funds are limited. Performance difference can be minimal. When viewed from the end where the slits are mounted, light should enter from the left. Wavelength counter and electrical panels can be swapped from side to side.

 

Specifications

High resolution spectrometer. 2 models available.

Focal Length

640mm

Spectral Range

0-1500nm mechanical range (1200g/mm grating)
0-40µm spectral range with appropriate gratings

Aperture

F/5.6 or F/7

Dispersion

1.2nm/mm

Resolution

0.016nm

Grating Turret

Optional automated dual grating turret

Slits

Manually variable slits.
Optional manual or automated side entrance
and exit slits.

Dimensions

772 x 300 x 290mm

Control

Motorised
Optional RS232 or IEEE488 interfaces
Windows or DOS software

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