Compact 3D Profilometer with Grazing Incidence Diffraction Optics

Characterization of Diffraction Gratings by use of a Tabletop Soft-X-Ray Laser.

We have demonstrated the use of a high-repetition-rate 46.9-nm tabletop laser to characterize diffraction gratings designed for grazing-incidence operation in the soft-x-ray spectral region. The efficiencies for various diffraction orders were measured as a function of angle of incidence and compared with the results of model simulations. This measurement technique provides benchmarks with whic...

Multichannel grazing-incidence spectrometer for plasma impurity diagnosis: SPRED.

A compact vacuum ultraviolet spectrometer system has been developed to provide time-resolved impurity spectra from tokamak plasmas. Two interchangeable aberration-corrected toroidal diffraction gratings with flat focal fields provide simultaneous coverage over the ranges 100-1100 A or 160-1700 A. The detector is an intensified self-scanning photodiode array. Spectral resolution is 2 A with the ...

In-focus monochromator: theory and experiment of a new grazing incidence mounting.

UNLABELLED A varied-space grating mounted to both rotate and translate constitutes a practical single element fixed slit monochromator which is in focus at all wavelengths. KEYWORDS Monochromators, diffraction gratings, grazing incidence, x-ray optics.

Aplanatic grazing incidence diffraction grating: a new optical element.

External-cavity diode laser using a grazing-incidence diffraction grating.

An external cavity has been developed for use with commercial diode lasers. It uses a diffraction grating at grazing incidence for wavelength selection and output coupling. This configuration allows a GaAlAs diode laser to be tuned conveniently anywhere in a range greater than 20 nm. Also, the linewidth is reduced by a factor of more than 1000 from 40 MHz to less than 10 kHz. The new laser syst...