skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Grating array systems having a plurality of gratings operative in a coherently additive mode and methods for making such grating array systems

Abstract

A plurality of gratings (G1, G2) are arranged together with a wavefront sensor, actuators, and feedback system to align the gratings in such a manner, that they operate like a single, large, monolithic grating. Sub-wavelength-scale movements in the mechanical mounting, due to environmental influences, are monitored by an interferometer (28), and compensated by precision actuators (16, 18, 20) that maintain the coherently additive mode. The actuators define the grating plane, and are positioned in response to the wavefronts from the gratings and a reference flat, thus producing the interferogram that contains the alignment information. Movement of the actuators is also in response to a diffraction-limited spot on the CCD (36) to which light diffracted from the gratings is focused. The actuator geometry is implemented to take advantage of the compensating nature of the degrees of freedom between gratings, reducing the number of necessary control variables.

Inventors:
 [1];  [2];  [3]
  1. Mendon, NY
  2. Victor, NY
  3. Pittsford, NY
Publication Date:
Research Org.:
University of Rochester
Sponsoring Org.:
USDOE
OSTI Identifier:
902763
Patent Number(s):
7,177,031
Application Number:
10/836,763
Assignee:
University of Rochester (Rochester, NY) OSTI
DOE Contract Number:  
FC03-92SF19460
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Kessler, Terrance J, Bunkenburg, Joachim, and Huang, Hu. Grating array systems having a plurality of gratings operative in a coherently additive mode and methods for making such grating array systems. United States: N. p., 2007. Web.
Kessler, Terrance J, Bunkenburg, Joachim, & Huang, Hu. Grating array systems having a plurality of gratings operative in a coherently additive mode and methods for making such grating array systems. United States.
Kessler, Terrance J, Bunkenburg, Joachim, and Huang, Hu. Tue . "Grating array systems having a plurality of gratings operative in a coherently additive mode and methods for making such grating array systems". United States. doi:. https://www.osti.gov/servlets/purl/902763.
@article{osti_902763,
title = {Grating array systems having a plurality of gratings operative in a coherently additive mode and methods for making such grating array systems},
author = {Kessler, Terrance J and Bunkenburg, Joachim and Huang, Hu},
abstractNote = {A plurality of gratings (G1, G2) are arranged together with a wavefront sensor, actuators, and feedback system to align the gratings in such a manner, that they operate like a single, large, monolithic grating. Sub-wavelength-scale movements in the mechanical mounting, due to environmental influences, are monitored by an interferometer (28), and compensated by precision actuators (16, 18, 20) that maintain the coherently additive mode. The actuators define the grating plane, and are positioned in response to the wavefronts from the gratings and a reference flat, thus producing the interferogram that contains the alignment information. Movement of the actuators is also in response to a diffraction-limited spot on the CCD (36) to which light diffracted from the gratings is focused. The actuator geometry is implemented to take advantage of the compensating nature of the degrees of freedom between gratings, reducing the number of necessary control variables.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 13 00:00:00 EST 2007},
month = {Tue Feb 13 00:00:00 EST 2007}
}

Patent:

Save / Share: