Dynamic alignment design and assessment for scanning interferometers

Norman H. Macoy; Hal Broberg; Jean Giroux; Martin Chamberland

doi:10.1117/12.258879

21 November 1996 Dynamic alignment design and assessment for scanning interferometers

Norman H. Macoy, Hal Broberg, Jean Giroux, Martin Chamberland

Author Affiliations +

Proceedings Volume 2832, Optical Instruments for Weather Forecasting; (1996) https://doi.org/10.1117/12.258879
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Misaligned interferometer cavity optics introduce into the retrieved spectra multiplicative noise terms. Low frequency or static tilts convey a moderate impact on system performance and are manifested as amplitude distortion of the reconstructed spectrum, through a reduction of the instrument line shape function, while dynamic tilts convey a strong impact on system performance manifested as radiometric errors through a multiplicative noise term. Dynamic alignment which is an electromechanical feedback control technique of the interferometer cavity optics eliminates some extremely exacting design and fabrication requirements and provides safety margin for thermally or vibrationally induced structural distortions. Employing both coherent and incoherent radiation, several optical or electro-optical sub aperture and full aperture measurement techniques have been employed to determine the static and dynamic alignment characteristics of a customized brassboard Bomem, Inc. instrument. The unit evaluated was configured as an adaptation of their commercial DA-2 unit and employed galvanometric alignment actuators with amplitude reduction mechanical linkages.

Citation Download Citation

Norman H. Macoy, Norman H. Macoy, Hal Broberg, Hal Broberg, Jean Giroux, Jean Giroux, Martin Chamberland, Martin Chamberland, "Dynamic alignment design and assessment for scanning interferometers", Proc. SPIE 2832, Optical Instruments for Weather Forecasting, (21 November 1996); doi: 10.1117/12.258879; https://doi.org/10.1117/12.258879

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years