Red Eu, Yb:KY(WO4)2 laser at ~702 nm. (8th July 2015)

• Record Type: Journal Article
• Authors: Dashkevich, V I; Bagayev, S N; Orlovich, V A; Bui, A A; Loiko, P A; Yumashev, K V; Yasukevich, A S; Kuleshov, N V; Vatnik, S M; Pavlyuk, A A
• Is Part Of: Laser physics letters. Volume 12:Number 8(2015:Aug.)
• Publication Date: 2015-07-08
• Subjects: europium -- double tungstates -- red laser -- CW mode; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-2011/12/8/085001
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: In this letter, laser operation is demonstrated with a Eu, Yb: KY(WO4 )2 crystal on the 5 D0 → 7 F4 transition of the Eu 3+ ion. When pumping into the 7 F1 → 5 D1 absorption band by a diode-pumped Nd 3+ :KGd(WO4 )2 /KTP laser power-scaled at 533.6 nm up to a watt-level, we achieved 2.5 mW of the continuous wave (CW) red output at ~702.1 nm. At quasi-CW pumping with a duty cycle of 10%, the peak power of the ms-long pulses arrived at ~19 mW, corresponding to a green-to-red conversion efficiency of 0.8%.