E‐beam pumped mid‐UV sources based on MBE‐grown AlGaN MQW. Issue 5 (19th February 2015)

• Record Type: Journal Article
• Authors: Ivanov, S. V.; Jmerik, V. N.; Nechaev, D. V.; Kozlovsky, V. I.; Tiberi, M. D.
• Is Part Of: Physica status solidi. Volume 212:Issue 5(2015:May)
• Page Start: 1011
• Page End: 1016
• Publication Date: 2015-02-19
• Subjects: Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201431756
• Languages: English
• ISSNs: 1862-6300

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssa201431756-sec-0001" sec-type="section"> <p>A 60 mW output power has been achieved in mid‐UV (<italic>λ</italic> = 270 nm) spontaneous sources with electron‐beam pulse‐scanning pumping, fabricated from AlGaN MQW heterostructures grown by PA MBE on c‐Al₂O₃ substrates. Under the CW pumping at much lower excitation power density the mid‐UV sources demonstrate a 4.7 mW output power. In that regime the power efficiency of the structures is about 0.24%, while their internal quantum efficiency is estimated to be as high as 50%.</p> </sec> </abstract>