Liquid crystal display as a spectral selection element for visible spectrometers

• Autorzy: Hegde G. M.
• Języki publikacji: EN

Abstrakty

EN

In this paper, polarization property of twisted nematic liquid crystal display (TNLCD) was experimentally studied for its application as a wavelength selection element. Output from a white light emitting diode (LED) was separated into its constituent wavelengths, with a resolution of about 2-5 nm in proportion to the voltage applied to TNLCD. Its performance as a spectral selection element in visible spectrometer is experimentally demonstrated. A simple, inexpensive spectrometer design built around a LED and a TNLCD is proposed.

Słowa kluczowe

EN

spectrometer; nematic liquid crystal; spectral selection; tunable filter

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Journal of Technical Physics
• Rocznik: 2009
• Tom: Vol. 50, no 2
• Strony: 87--96
• Opis fizyczny: Bibliogr. 24 poz., rys., wykr.

Twórcy

autor

Hegde G. M.

• Department of Aerospace Engineering, Indian Institute of Science, Bangalore-560012, India,

Bibliografia

• 1. Z. HE, T. NOSE and S. SATO, Cylindrical liquid crystal lens and its applications in optical pattern correlation systems, Jpn. J. Appl. Phys., 34, 2392-2398, 1995.
• 2. G. WENICKE, S. KRUGER, H. GRUBER, N. DEMOLI, M. DURR and S. TEIWES, LCD as SLM for diffractive optical elements and reconstruction of digital holograms, Proc. SPIE, 4596, 182-187, 2001.
• 3. H. REN, Y. H. FAN and S. T. WUA, Prism grating using polymer stabilized nematic liquid crystal, Appl. Phys. Letts., 82, 3168-3170, 2003.
• 4. S.W. KANG, S. SPRUNT and L. C. CHIEN, Structure and morphology of polymer-stabilized cholesteric diffraction gratings, Appl. Phys. Letts., 76, 3516-3518, 2000.
• 5. X. WANG, D. WILSON, R. MULLER, P. MARKER and D. PSALTIS, Liquid-crystal blazed-grating beam deflector, Appl. Opt., 39, 6545-6555, 2000.
• 6. G. WENICKE, S. KRUGER, J. KAMPS, H. GRUBER, N. DEMOLI, M. DURR and S. TEIWES, Application of a liquid crystal display spatial light modulator system as dynamic diffractive element and in optical image processing, J. Opt. Commun., 25, 141-145, 2004.
• 7. I. MORENO, A. M’ARQUEZ, J. A. DAVIS, J. CAMPOS and M. J. YZUEL, Realization of complex amplitude optical diffractive elements with optimized liquid crystal modulators, Opt. Pur. And Appl., 38, 1-6, 2005.
• 8. O. PISHNYAK, S. SATO and O. D. LAVRENTOVICH, Electrically tunable lens based on a dual-frequency nematic liquid crystal, Appl. Opt., 45, 4576-4582, 2006.
• 9. G. D. LOVE, J. V. MAJOR and A. PURVIS, Liquid-crystal prisms for tip-tilt adaptive optics, Opt. Lett., 19, 1170-1182, 1994.
• 10. D. P. RESLER, D. S. HOBBS, R. C. SHARP, L. J. FRIEDMAN and T. A. DORSCHNER, High-efficiency liquid-crystal optical phased-array beam steering, Opt. Lett., 21, 689-691, 1996.
• 11. N. FRIEDMAN, A. KAPLAN and N. DAVIDSON, Acousto-optic scanning system with very fast nonlinear scans, Opt. Lett., 25, 1762-1764, 2000.
• 12. A. KAPLAN, N. FRIEDMAN and N. DAVIDSON, Acousto-optic lens with very fast focus scanning, Opt. Lett., 26, 1078-1080, 2001.
• 13. T. HAN, N. WEI-MING, P. ZHOU, H. Y. YOU, J. H. JIA, S. Y. WANG and L. Y. CHEN, A new spectrometer using multiple gratings with a two-dimensional charge-coupled diode array detector, Rev. Sci. Instrum., 74, 2973-2976, 2003.
• 14. T. L. HELG, T. H. BARNES and T. G. HASKELL, A novel high-resolution interference Spectrometer, Opt. Lasers Eng., 29, 413-422, 1998.
• 15. H. J. MASTERSON, G. D. SHARP and K. M. JOHNSON, Ferroelectric liquid-crystal tunable filter, Opt. Lett., 14, 1249-1251, 1989.
• 16. G. D. SHARP, K. M. JOHNSON and D. DOROSKI, Continuously tunable smectic A*liquid-crystal color filter, Opt. Lett., 15, 523-525, 1990.
• 17. G. D. SHARP, D. DOROSKI and K. M. JOHNSON, Rapidly switchable optical filter for color generation, Opt. Lett., 16, 875-877, 1991.
• 18. J. W. McMURDY, G. P. CRAWFORD and G. D. JAY, Ferroelectric liquid crystal based tunable microspectrometer, Mol. Cryst. Liq. Cryst., 476, 307-322, 2007.
• 19. S. C. GEBHART, R. C. THOMPSON and J. A. MAHADEVAN, Liquid-crystal tunable filter spectral imaging for brain tumor demarcation, Appl. Opt., 46, 1896-1910, 2007.
• 20. S. MATSUMOTO, U.S. patent 4,097,128, 1978.
• 21. S. APTERGUT, U.S. patent 4,581,608, 1986.
• 22. T. S. BUZAK, U.S. patent 4,674,841, 1987.
• 23. C. H. GOOCH and H. A. TARRY, Optical characteristics of twisted nematic liquid-crystal films, Elect. Letts., 10, 2-4, 1974.
• 24. R. M. A AZZAM and N. M. BASHARA, Simplified approach to the propagation of polarized light in anisotropic media-Applications to liquid crystals, J. Opt. Soc. Am., 62, 1252-1257, 1972.