Abstract:

This laboratory work emphasize on the characterization of designed and constructed grating spectrometer . This was done by measuring the diffraction efficiency of the fabricated grating. The fabricated grating is a binary grating with height 650 nm, period 880 nm and fill factor 0.40 nm. The light source used were laser sources and halogen lamp with wavelength range 532 nm and 473 nm. CCD line camera is used as a detector having 3648 pixels with each pixel having a size of 8μm. The diffraction efficiencies and filter transmittance measured with the Perkin Lambda 18 spectrophotometer are compared with the constructed spectrometer. The characterization is done by measuring the full width half maximum (FWHM) of the detected laser line peaks by the constructed spectrometer.

References:

[1] J. M. Hollas, Modern Spectroscopy, 4 ed. (John Wiley and sons Limited, West Sussex, 2004).

[2] R. S. Winsor, J. W. Mackenty, M. Stiavelli, M. A. Greenhouse, J. E. Mentzell, R. G. ohi IV, and R. F. Green, “Optical design for an infrared imaging multi-object spectrometer(IRMOS),” PROC-SPIE 4092, 102–108 (2000).

[3] C. Palmer, Diffraction Grating Handbook, 2nd ed. (Wiley, New York, 1997).

[4] U. Platt and J. Stutz, Differential Optical Absorption Spectroscopy (Springer Berlin Heidelberg, 2008).

[5] http:www.oceanoptics.com/products/benchoptics ge.asp,

[6] H. Tuovinen, “Characterization of designed and constructed optical system,” University of Eastern Finland, Joensuu (2015).

[7] bwtek, http://bwtek.com/spectrometer-part-5-spectral-resolution/ (valid 2015).