Abstract

The Solar Ultraviolet Measurements of Emitted Radiation (SUMER) instrument on the Solar and Heliospheric Observatory (SOHO) satellite is sensitive to the state of linear polarization of the incident radiation primarily owing to two optical elements, the holographic grating and the wavelength scan mirror. The large angle of incidence of light striking the scan mirror, which varies from roughly 73.3° to 81.6° (with respect to the mirror normal), causes the mirror to act as a linear polarizer. Similarly, the spectrometer grating operates at incidence angles between 16.7° and 35.0°, adding to the polarization effect at some wavelengths. Measurement and characterization of this polarization sensitivity as a function of wavelength were performed with the engineering model optics (scan mirror and grating) and synchrotron radiation, which is nearly 100% linearly polarized, from the Super Anneau de Collisions d’Orsay (SUPERACO) positron storage ring in Orsay3. The polarization sensitivity or modulation factor of the SUMER instrument was found to be between 0.4 and 0.6, depending on the wavelength and the angle of incidence of light striking the scan mirror; this agrees with the calculated polarization properties based on the measured optical constants for the silicon carbide mirror and grating.

© 1997 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Intercalibration of SUMER and CDS on SOHO. II. SUMER detectors A and B and CDS NIS

Anuschka Pauluhn, Isabelle Rüedi, Sami K. Solanki, Udo Schühle, Klaus Wilhelm, Jim Lang, William T. Thompson, and Jörg Hollandt
Appl. Opt. 40(34) 6292-6300 (2001)

Radiometric calibration of the telescope and ultraviolet spectrometer SUMER on SOHO

Jörg Hollandt, Udo Schühle, Wolfgang Paustian, Werner Curdt, Michael Kühne, Burkhard Wende, and Klaus Wilhelm
Appl. Opt. 35(25) 5125-5133 (1996)

Intercalibration of SUMER and CDS on SOHO. I. SUMER detector A and CDS NIS

Anuschka Pauluhn, Isabelle Rüedi, Sami K. Solanki, Jim Lang, C. Dave Pike, Udo Schühle, William T. Thompson, Jörg Hollandt, and Martin C. E. Huber
Appl. Opt. 38(34) 7035-7046 (1999)

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 (6)

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 (1)

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