Frequently Asked Questions

We need spectral range, configuration of use (monochromator or spectrograph), numerical aperture (F number) or size of grating, maximum overall dimension or maximum focal length, desired dispersion, desired resolution, entrance slit width and height or source geometry, minimum deviation, and at exit: if monochromator, exit slit width and height, and if flat field, length of detector, height and width of pixel.

It is a grating that disperses, collimates, and refocuses light from the entrance slit onto the exit slit, with wavelength scanning achieved through a simple rotation of the grating. The groove spacing of these gratings is optimized to produce high-quality images with minimal astigmatism and coma, even at large numerical aperture.

Yes, in addition to the standard lists of Type IV flat field and monochromator gratings, HJY currently produces specific aberration-corrected concave gratings to maximize performance for a given application, using proprietary ray-tracing software to optimize performance: resolution, throughput, and signal-to-noise ratio.

HORIBA Jobin Yvon offers complete customer service, including expert technical advice for optimizing system configurations to meet customers’ needs. They are ISO9001:2000 certified, and their well-staffed departments are committed to customer satisfaction and product quality.

Type IV aberration-corrected monochromator gratings provide much better light collection efficiency and signal-to-noise ratio compared to Czerny-Turner monochromators, which are equipped with one plane grating, one collimating mirror, and one focusing mirror.

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