Laser action from Mn5+ in Ba3(VO4)2

Abstract

We report the first observation, to our knowledge, of three-level laser oscillator operation in a crystal activated with Mn5+. The material is Mn:Ba3(VO4)2 which exhibited laser oscillation at room temperature under pulsed 592 nm excitation. The laser emission occurs at 1181 nm with a threshold of 0.3 J/cm2. Spectroscopy indicates that this material operates as a three-level system on the 1E to 3A2 transition of the Mn5+ ion with tetrahedral coordination. The strong, broad absorption bands and 0.43 ms room-temperature lifetime make this system very promising for flash lamp AlxGa1−xAs diode pumping.

Amorphization of Ca3(VO4)2at High Pressure

“…Its luminescent properties are enhanced in solid solution series with other alkali earth orthovanadates (8) or phosphates (3). Ca (VO ) is also a possible host for Mn> in the Ca (VO ) : Mn> laser system (9). The defect structure of calcium orthovanadate along with the presence of V> ions or rare-earth doping accounts for its high electronic conductivity (10)(11)(12).…”

High Pressure Behavior of Sr3(VO4)2and Ba3(VO4)2

“…The alkaline earth metal orthovanadates, Me (VO ) (Me: Ca, Sr, Ba), have attracted much attention owing to their interesting optical, transport, and ferroelectric properties [1][2][3][4][5][6][7]. Among them, strontium and barium orthovanadates, Sr (VO ) and Ba (VO ) , exhibit intense rare earth activated luminescence and can be used as luminophors and host materials for lasers (1).…”

Laser crystals and ceramics: recent advances

“…The first laser crystals with 3d 2 ions were the Mn 5+ -doped vanadates Ba 3 (VO 4 ) 2 and Sr 3 (VO 4 ) 2 [278], the SE of which involved generation in the 1 E → 3 A 2 channel (Fig. 12).…”