Photophysics of chromium-related diamond single-photon emitters

被引：62
作者：
Aharonovich, I. [1 ]
Castelletto, S. [1 ]
Simpson, D. A. [1 ]
Greentree, A. D. [1 ]
Prawer, S. [1 ]
机构：
[1] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia
来源：
PHYSICAL REVIEW A | 2010年 / 81卷 / 04期
基金：
澳大利亚研究理事会;
关键词：
EMISSION; CENTERS; DEFECT;
D O I：
10.1103/PhysRevA.81.043813
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A detailed study of the photophysical properties of several chromium-related color centers produced within chemical vapor deposition diamond is presented. These emitters show narrow luminescence lines in the range of 740-770 nm. Single-photon emission was verified with continuous and pulsed excitation with detected emission rates at saturation in the range of (2-3) x 10(6) counts/s, while direct lifetime measurements reveal excited state lifetimes for the distinct centers ranging 1-14 ns. In addition, a number of quantum emitters demonstrate two-level behavior with no bunching present in the second-order correlation function. The three-level systems revealed typically photoluminescence lines with width half-maximum of similar to 4 nm while the two-level emitters have full width half-maximum of similar to 10 nm at room temperature. In addition, the quantum efficiency of the two-level system was measured to be four times higher than that of the three-level system.
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页数：7
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