Growth of PbSe Quantum Dots Within High‐Index Lead‐Phosphate Glass for Infrared Saturable Absorbers. Issue 1 (7th January 2013)

• Record Type: Journal Article
• Authors: Kannan, Pradeesh; Choudhary, Amol; Mills, Benjamin; Feng, Xian; Shepherd, David P.; Heo, J.
• Is Part Of: Journal of the American Ceramic Society. Volume 96:Issue 1(2013)
• Page Start: 197
• Page End: 200
• Publication Date: 2013-01-07
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.12017
• Languages: English
• ISSNs: 0002-7820

Abstract

<abstract abstract-type="main" xml:lang="en" id="jace12017-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p>PbSe quantum dots (QDs) were grown in high‐refractive‐index low‐melting‐temperature lead‐phosphate glass. The lowest energy exciton transition of the QDs was tuned over a wide range within the infrared spectral region (0.93–2.75 μm) by a controlled heat treatment. The measured QD radius ranged between 2 and 5.3 nm, with a time (<italic>t</italic>) dependence of <italic>t</italic>^0.29 for long dwelling times during the heat treatment, indicating that the QD growth mechanism tends to follow Lifshitz‐Slyozov‐Wagner theory. The QD saturable absorber behavior at 1.2 μm had a measured saturation fluence of ~2.1 μJ/cm².</p> </abstract>