Ebert mounting

Figure 24.7, depicts the schematic diagram of a Ebert-Mounting Spectrograph with the following vital components. 

Salient Features of Ebert-Mounting Spectrographs The various salient features are, namely ... 

Figure 10. Experimental set-up for Raman spectroscopy with the evanescent wave. For excitation, an argon ion laser was used ( 488 nm, output power 1.5 W cw). The material of the reflection plate is fused silica or super dense flint glass. Monochromator Ebert mount Jarrell-Ash 30 cm focal length diffraction gratings 150 or 600 g/mm.

In a Czerny-Turner mount, two smaller concave mirrors are use instead of a single mirror (Figure 126). The optical characteristics of the Ebert mount and the Czerny-Turner mount are similar. In these mounts changes from one wavelength to another can easily by made by rotating the grating using a computer controlled stepper motor. 

The Baird-Atomic, Inc., dual-grating instrument, shown in Figure 4-10, uses an Ebert mounting. The two gratings are independently adjustable. A focal length of 2 m provides a reciprocal linear dispersion of 4 A/mm with 1200 grooves/mm gratings. 

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