Improving the signal-to-noise ratio of femtosecond luminescence upconversion by multichannel detection

被引：26

作者：

Haacke, S ^{[1
]}

Taylor, RA

Bar-Joseph, I

Brasil, MJSP

Hartig, M

Deveaud, B

机构：

[1] Swiss Fed Inst Technol, Inst Micro & Optoelect, Dept Phys, CH-1015 Lausanne, Switzerland

[2] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[3] Weizmann Inst Sci, Dept Phys, IL-76100 Rehovot, Israel

[4] Univ Estadual Campinas, Inst Fis, BR-13081970 Campinas, SP, Brazil

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 1998年 / 15卷 / 04期

关键词：

D O I：

10.1364/JOSAB.15.001410

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页码：1410 / 1417

页数：8

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