Noise analysis of a CCD based ultra-violet spectrometry system

We present the results of a study into the noise behaviour of an Avaspec-3648 CCD UV spectrometer for use in a spectroscopic gas detection system. A comparison was made between a deuterium UV lamp and a range of newly developed UV LEDs. A number of noise phenomena were identified and quantified including source fluctuation noise, photo-response non-uniformity (PRNU), dark current noise, fixed pattern noise (FPN) and read noise. For spectral measurements the dominant noise phenomenon was PRNU, giving a noise equivalent absorption (NEA) of 8 x 10-3 AU. A set of noise limitation techniques is presented, which decreases the NEA to 2 x 10-3 AU.

[1]  T. Wang,et al.  [Research on VOC concentration detection by photoelastic modulation infrared spectrum absorption method]. , 2011, Guang pu xue yu guang pu fen xi = Guang pu.

[2]  George Zonios.  Noise and stray light characterization of a compact CCD spectrophotometer used in biomedical applications. , 2010, Applied optics.

[3]  Ann Carine Vandaele,et al.  Fourier transform measurements of SO2 absorption cross sections: II.: Temperature dependence in the 29 000–44 000 cm−1 (227–345 nm) region , 2009 .

[4]  M. Boiocchi,et al.  Application of the Vis-NIR Avaspec-2048 portable automatic spectrometer to distinguish GEM quality materials , 2009 .

[5]  I. Ansko,et al.  Study of suitability of AvaSpec array spectrometer for solar UV field measurements , 2008 .

[6]  K. Unsworth,et al.  A model for measurement of noise in CCD digital-video cameras , 2008 .

[7]  Branimir Ivanov,et al.  White light Fourier spectrometer: Monte Carlo noise analysis and test measurements , 2007, SPIE Optical Metrology.

[8]  Hartmut Ewald,et al.  Low-cost sensor for online detection of harmful diesel combustion gases in UV-VIS region , 2006, SPIE Photonics Europe.

[9]  W. Chaplin,et al.  Noise characteristics of full-disc helioseismic observations made by resonant scattering spectrometers , 2005 .

[10]  T. Vess,et al.  Remote fiber optic Raman analysis of benzene, toulene, and ethylbenzene in mock petroleum fuels using partial least squares regression analysis , 1996 .

[11]  Gerald C. Holst,et al.  CCD arrays, cameras, and displays , 1996 .

[12]  Peter Centen,et al.  CCD on-chip amplifiers: noise performance versus MOS transistor dimensions , 1991 .

[13]  J. Hynecek,et al.  Spectral analysis of reset noise observed in CCD charge-detection circuits , 1990 .

[14]  J. Burrows,et al.  Absorption cross-sections of NO2 in the UV and visible region (200 – 700 nm) at 298 K , 1987 .

[15]  G. Hernandez.  Analytical description of a Fabry-Perot spectrometer. 4: Signal noise limitations in data retrieval; winds, temperature, and emission rate. , 1978, Applied optics.

[16]  D. J. Johnson,et al.  A comparison of signal-to-noise ratios for single channel methods (sequential and multiplex) vs multichannel methods in optical spectroscopy☆ , 1976 .

[17]  S. R. Crouch,et al.  Theoretical and experimental investigation of factors affecting precision in molecular absorption spectrophotometry , 1975 .

[18]  A. G. Gaydon,et al.  Spectrochemical Analysis , 1951, Nature.