Red, Green, and Blue Laser Action in Solid Colloidal Quantum Dot Films

被引：0
|
作者：
Cuong Dang [1 ]
Roh, Kwangdong [2 ]
Lee, Joonhee [1 ]
Breen, Craig [3 ]
Steckel, Jonathan S. [3 ]
Coe-Sullivan, Seth [3 ]
Nurmikko, Arto [1 ,2 ]
机构：
[1] Brown Univ, Sch Engn, Providence, RI 02912 USA
[2] Brown Univ, Dept Phys, Providence, RI 02912 USA
[3] QD Vis Inc, Lexington, MA 02421 USA
来源：
2012 12TH IEEE CONFERENCE ON NANOTECHNOLOGY (IEEE-NANO) | 2012年
关键词：
Quantum dot; Red green blue laser; Single exciton gain; Vertical cavity laser; OPTICAL GAIN;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report on wavelength-variable lasing from optical gain media composed of colloidal quantum-dots (CQD) thin films across the visible spectrum. Exploiting single exciton gain enables amplified spontaneous emission (ASE) and vertical cavity lasing at very low optical pump thresholds. The average number of exciton per CQD at the ASE threshold is < N >similar to 0.8, which significantly reduces losses from enhanced non radiative multiexciton Auger recombination in nanometer sized semiconductor particle, enabling quasi-continuous-wave CQD laser performance in densely packed nanocomposites.
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页数：2
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