Tunable liquid-crystal filter for solar imaging at the HeI 1083-nm line

Applied Optics

Volumn 36, Issue 1, 1997, Pages 291-296

  Kopp, G A ^a   Derks, M J ^a   Elmore, D F ^b   Hassler, D M ^b   Woods, J C ^c   Streete, J L ^c   Blankner, J G ^c  

^a Meadowlark Optics   (United States)

^b NATIONAL CENTER FOR ATMOSPHERIC RESEARCH   (United States)

^c RHODES COLLEGE   (United States)

Author keywords

Liquid crystals; Lyot hman; Tunable filters

Indexed keywords

EID: 0005616765     PISSN: 1559128X     EISSN: 21553165     Source Type: Journal    
DOI: 10.1364/AO.36.000291     Document Type: Article

References (17)

1. -1(7350 to 11230 A),” NSO Tech. Rep. 93-001 (National Solar Observatory, Tucson, Ariz., 1993).
2. B. Lyot, “Le filtre monochromatique polarisant et ses applications en physique solaire,” Ann. Astrophys. 7, 31-79 (1944).
3. Y. Ohman, “A new monochromator,” Nature (London) 141, 157-158 (1938).
4. J. W. Evans, “The birefringent filter,” J. Opt. Soc. Am. 39, 229-242 (1949).
5. J. Hobbs, “Tunable liquid-crystal filter helps study stellar emission,” Laser Focus World 29, 29 (1993).
6. P. Miller, “Tunable narrowband birefringent filters for astronomical imaging,” inInstrumentation in Astronomy VII, D. L. Crawford, ed., Proc. SPIE 1235, 466-473 (1990).
7. K. Johnson, “Liquid crystal-on-silicon smart pixel spatial lightmodulators,” presented at the Rocky Mountain Optical Society Monthly Meeting, Boulder, Colo., 18 January 1996.
8. X. Wang and J. Yao, “Transmitted and tuning characteristics of birefringent filters,” Appl. Opt. 32, 4505-4508 (1992).
9. B. Wacogne, J. Goedgebuer, A. Onokhov, and M. Tomilin, “Wavelength tuning of a semiconductor laser using nematic liquid crystals,” IEEE J. Quantum Electron. 29, 1015-1017 (1993).
10. R. Green, C. Sarture, C. Chovit, J. Faust, P. Hajek, and H. Novak, “AVIRIS: a new approach to earth remote sensing,”Opt. Photon. News 6, 30-33 (1995).
11. A. Title and W. Rosenberg, “Tunable birefringent filters,” Opt. Eng. 20, 815-823 (1981).
12. J. Beckers, L. Dickson, and R. Joyce, “Observing the sun with a fully tunable Lyot-Ohman filter,” Appl. Opt. 14, 2061-2066 (1975).
13. H. P. Jones, J. W. Harvey, and V. Andretta, “Joint observations ofthe chromosphere, transition region, and corona from SOHO and NSO/Kitt Peak,” inSolar Dynamic Phenomena and Solar Wind Consequences, ESA SP-373 (European Space Agency, Paris, December 1994), pp. 345-354.
14. G. Kopp, “Tunable birefringent filters using liquid crystal variable retarders,” inPolarization Analysis and Measurement II, D. H. Goldstein and D. B. Chenault, eds., Proc. SPIE 2265, 193-201 (1994).
15. Y. Itoh, H. Seki, T. Uchida, and Y. Masuda, “A double-layer electrically controlled birefringence liquid crystal display with a wide viewing angle cone,” Jpn. J. Appl. Phys. Lett. 30, L1296-L1299 (1991).
16. D. M. Hassler, D. F. Elmore, A. Lecinski, K. Streander, J. Burkepile, A. Stanger, A. J. Hundhausen, G. J. Rottman, and R. M. MacQueen, “ACOS: HAO’s next generation coronal observing facility at Mauna Loa,” Am. Astron. Soc. Bull. 27, 970-971 (1995).
17. D. F. Elmore, D. H. Hassler, and K. Streander, “Chromo-spheric helium-I imaging photometer: a new instrument forhigh time cadence solar 1083 nm observations,” Appl. Opt. (to be published).