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:
-
- Mendon, NY
- Victor, NY
- Pittsford, NY
- Issue Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 902763
- Patent Number(s):
- 7177031
- Application Number:
- 10/836,763
- Assignee:
- University of Rochester (Rochester, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- 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. 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}
}
Works referenced in this record:
Finite size compression gratings in a large aperture chirped pulse amplification laser system
journal, January 1997
- Trentelman, Mark; Ross, Ian N.; Danson, Colin N.
- Applied Optics, Vol. 36, Issue 33
An array-grating compressor for high-power chirped-pulse amplification lasers
journal, January 1998
- Zhang, Tiejun; Yonemura, Motoki; Kato, Yoshiaki
- Optics Communications, Vol. 145, Issue 1-6