PACS: 42.79. Ci

Tunable high-finesse narrow bandpass Fabry – Perot filter
V.B. Markov1, A.I. Khizhnyak1, V. Goren1,2, W.B. Cook3

1 MetroLaser, Inc., 2572 White Rd., Irvine, CA 92614, USA
2 University of California, Irvine, CA 92697, USA
3 NASA Langley Research Center, Hampton, VA 23681, USA

Abstract. This paper discusses the results of the analysis and experimental characterization of a narrow bandpass optical filter based on the Fabry – Perot interferometer configuration with a variable spacing between the mirrors allowing for a relatively wide spectral tunability. Such a filter, with a high-throughput bandpass and sufficiently large aperture and acceptance angle, is of practical interest for a highresolution spectrometry and remote sensing in the visible and infrared spectral regions. The Fabry – Perot filter (FPF) can be designed in a compact single-assembly architecture that can be accommodated within existing instruments and should provide a stable performance under variable thermal and mechanical conditions, including space and airborne platforms. Possible applications of the filter include high-resolution multispectral imaging, terrain mapping, atmosphere and surface parameters measurements, and detection of chemical and biological agents.

Keywords: imaging Fabry – Perot interferometer, bandpass, optical throughput.

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