Abstract

The off-axis pivot-point mounting for toroidal uniform line-space (TULS) gratings and spherical varied line-space (SVLS) is presented: One scans the spectrum by rotating the grating about the pivot point. The best choice for the location of the point is discussed: For a monochromator the location is chosen such that the grating is moved approximately along the bisector of the subtended angle; for a spectrometer, it is chosen such that the grating is moved approximately along the direction of the incident ray. Minimizing the spectral defocusing caused by the rotation of the grating determines the optimum length of the pivot arm. The pivot points for TULS and SVLS gratings are found to be located on opposite sides with respect to the normal to the grating. In a comparison of the optical performance, the spectral focusing is similar, but the spatial aberrations can be fewer for a SVLS grating.

© 2000 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Design of a high-resolution extreme-ultraviolet imaging spectrometer with aberration-corrected concave gratings

Tatsuo Harada, Hideo Sakuma, Kaoru Takahashi, Tetsuya Watanabe, Hirohisa Hara, and Toshiaki Kita
Appl. Opt. 37(28) 6803-6810 (1998)

Stigmatic spectrometers for extended sources: design with toroidal varied-line-space gratings

Luca Poletto and Roger J. Thomas
Appl. Opt. 43(10) 2029-2038 (2004)

New Eagle-type monochromator mounting with ruled diffraction grating at 45° off-plane

Peter Lindblom and Bengt Sandberg
Appl. Opt. 19(12) 1941-1945 (1980)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (51)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription