Accession Number:

ADA064198

Title:

Increasing the Throughput of Hadamard Spectrometers by the Use of Curved Slots,

Descriptive Note:

Corporate Author:

UTAH STATE UNIV LOGAN ELECTRO-DYNAMICS LAB

Personal Author(s):

• Esplin,Roy W.
• Vanasse,George A.
• Baker,Doran J.
• Huppi,Ronald J.

Report Date:

1978-09-22

Pagination or Media Count:

318.0

Abstract:

This report proves that the optical throughput of Hadamard spectrometers can be significantly increased by using curved rather than straight slots. The slot curvature for a representative Hadamard spectrometer is optimized. For this Hadamard spectrometer the throughput is increased by a factor of ten by using optimally curved slots instead of straight slots. Analytic and ray-tracing methods are used to optimize the slot curvature. Experimental measurements with both straight and optimally curved slots are given for comparison. Ammonia absorption spectra taken in the 9 to 13-micrometers wavelength interval using 20-mm tall curved slots are given. Author

Descriptors:

• *THROUGHPUT
• *SPECTROMETERS
• OPTIMIZATION
• OPTICAL PHENOMENA
• CODING
• CURVATURE
• SLOTS
• MULTIPLEXING
• RAY TRACING
• DISTORTION

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE