New collimation optics for our MSH monochromators

Due to its optical design, a beam always exits a Czerny-Turner monochromator in the angle corresponding to its f-number. Its irradiance thus decreases with increasing distance to the slit. Depending on the application, this can require a subsequent collimation. The question then is: Mirrors or lenses? If the monochromator is used as a tunable monochromatic light source, the chromatic aberration of simple plano-convex lenses is particularly disruptive. Achromats are better, but they are also only corrected for a certain wavelength range. Broadband applications demand the use of mirrors. This calls for (often multiple) beam deflection, which influences the unit dimension and requires a good mechanical alignment. Given this, a continuous linear beam guidance is almost impossible.

Our MSH monochromators/double monochromators now offer complete collimation optics which can easily be adapted to existing systems.

Based on two parabolic off-axis mirrors, a central pinhole and adjustable exit pupil, the collimator provides a parallel exit beam. By using different pinholes with various diameters, the quality of collimation vs. irradiance can be adapted to the application. 


Ing. Fabrizio Renzi
Ing. Fabrizio Renzi


Newsletter registration


Quantum Design s.r.l.

Via Francesco Sapori, 27
00143 Roma

Phone:+39 06 5004204
Fax:+39 06 5010389
Ing. Fabrizio RenziProduct Manager
+39 06 5004204
Write e-mail