Enhanced random lasing from a colloidal CdSe quantum dot-Rh6G system. (9th January 2015)

• Record Type: Journal Article
• Authors: Augustine, Anju K; Radhakrishnan, P; Nampoori, V P N; Kailasnath, M
• Is Part Of: Laser physics letters. Volume 12:Number 2(2015:Feb.)
• Publication Date: 2015-01-09
• Subjects: colloidal quantum dots -- threshold -- random laser; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/2/025006
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: In this letter, we report random laser action in a system where optical amplification is provided by colloidal CdSe quantum dots (CQDs) triggered by the emission from Rhodamine 6G. The laser emission from CdSe QDs is optically excited by Rh-6G which in turn is photo-pumped by a frequency-doubled Q-switched Nd : YAG laser system at an excitation wavelength of 532 nm. At intensities greater than the threshold value, laser emission is characterized by narrowing peaks.