Results 91 to 100 of about 291 (152)

Ultrahigh-resolution spectrometer based on 19 integrated gratings. [PDF]

Sci Rep, 2019
Jiang AQ, Zang KY, Tu HT, Chen JK, Lu WJ, Yoshie O, Wang XP, Xiang XD, Lee YP, Chen B, Zheng YX, Wang SY, Zhao HB, Yang YM, Chen LY.   +14 more
europepmc   +1 more source

Speciation of vanadium and the interacted solid surface of δ-alumina adsorbent in aqueous media in presence of humic acid. [PDF]

Sci Rep
El-Sayed AA.
europepmc   +1 more source

Automated, real-time material detection during ultrashort pulsed laser machining using laser-induced breakdown spectroscopy, for process tuning, end-pointing, and segmentation. [PDF]

PLoS One
Choi H, Phoulady A, Hoveida P, May N, Shahbazmohamadi S, Tavousi P.   +5 more
europepmc   +1 more source

Optics miniaturization strategy for demanding Raman spectroscopy applications. [PDF]

Nat Commun
Ilchenko O, Pilhun Y, Kutsyk A, Slobodianiuk D, Goksel Y, Dumont E, Vaut L, Mazzoni C, Morelli L, Boisen S, Stergiou K, Aulin Y, Rindzevicius T, Andersen TE, Lassen M, Mundhada H, Jendresen CB, Philipsen PA, Hædersdal M, Boisen A.   +19 more
europepmc   +1 more source

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Echelle volume binary grating: a step forward

Proceedings of SPIE, 2012
The possibility of making Volume Binary Gratings to be used in high dispersion instrumentations (echelle) is considered. The idea is to study volume gratings with a binary refractive index profile and to optimize it in terms of refractive index modulation, duty cycle, grating thickness keeping in mind the possible limitations in the realization step.
Andrea Bianco, Noboru Ebizuka
exaly   +3 more sources

Echelle gratings: their testing and improvement

Applied Optics, 1976
Tests are described on new master echelles of very large size and on others having unusually high blaze angles, produced on interferometrically controlled ruling engines. Defects arising from the gravitational distortion of large grating blanks during ruling were reduced by the use of calibrated edge-supporting springs to diminish sag.
G R, Harrison, E G, Loewen, R S, Wiley
openaire   +2 more sources

Blaze characteristics of echelle gratings

Applied Optics, 1982
A new model for the blaze function of the two in-plane mountings of echelle gratings is described and extended to account for defects in the edges of the grooves. Expressions for the relative efficiency are given. The model shows that the wavelength for the maximum blaze intensity differs slightly from the wavelength lambda(0) satisfying mlambda(0) = d[
S, Engman, P, Lindblom
openaire   +2 more sources

Echelle gratings for the near-infrared

SPIE Proceedings, 2012
We report on echelle gratings produced by diamond turning with groove spacings coarser than 20 lines per mm. Increasing the groove spacing of an echelle reduces the free spectral range allowing infrared orders to be matched to the detector size. Reflection echelle gratings designed for the near-infrared have potential wide application in both ambient ...
Kenneth H. Hinkle, Richard R. Joyce, Bernhard W. Bach, Erich Bach, Kirk G. Bach, Brooke M. Beam, Gary Poczulp, Verne V. Smith, Lloyd Wallace   +8 more
openaire   +1 more source

Improving Echelle Grating Efficiencies

Physica Scripta, 1983
Based on a previous study of echelle grating groove shapes, the groove edge defects of the master and its replicas were measured. It was found that the master and an even number of consecutive replicas have edge defects of several microns, whereas the first replica can be made almost without edge defects (< 0.1 μm).
Sonja Engman, Peter Lindblom, Edward Leibhardt   +2 more
openaire   +1 more source

The fabrication of the holographic echelle gratings

SPIE Proceedings, 2015
The echelle gratings with the ultra-high resolution are one of the key elements in spectroscopy, optical communications and other fields. Currently, the diamond ruling and the wet etching technique are two primary methods to fabricate echelle gratings. In this paper, we have adopted a new method of the echelle gratings fabrication.
Quan Liu, Fei Gao, Yang Zhou, Jianhong Wu   +3 more
openaire   +1 more source