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Type: Artigo de periódico
Title: Improving the signal-to-noise ratio of femtosecond luminescence upconversion by multichannel detection
Author: Haacke, S
Taylor, RA
Bar-Joseph, I
Brasil, MJSP
Hartig, M
Deveaud, B
Abstract: We have improved the sensitivity and signal-to-noise ratio of a luminescence upconversion experiment, using a charge-coupled device (CCD) as the detector. We show experimentally and numerically that the bandwidth of a 1-mm-thick beta-barium berate crystal is large enough to take full advantage of the multichannel capabilities of the CCD. The improvement is significant in a standard experiment with a single laser as well as in experiments with resonant excitation that use two synchronized femtosecond pulse sources at different wavelengths. The characteristics of the two-color scheme are discussed in detail. (C) 1998 Optical Society of America.
Country: EUA
Editor: Optical Soc Amer
Citation: Journal Of The Optical Society Of America B-optical Physics. Optical Soc Amer, v. 15, n. 4, n. 1410, n. 1417, 1998.
Rights: aberto
Identifier DOI: 10.1364/JOSAB.15.001410
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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