Diode pumped 500-picosecond Nd:GdVO₄Raman laser

Abstract

Self-Raman frequency conversion in a diode-pumped passively Q-switched Nd:GdVO 4 laser has been demonstrated. The use of LiF:F − 2 crystal as a saturable absorber has provided effective Q-switching of the Nd:GdVO 4 laser with high pulse energy. The laser pulse duration at the 1 st Stokes wavelength 1174 nm was as short as 500 ps. Diode-to-Raman optical conversion efficiency more than 2 % at the pulse peak power of 9 kW was achieved.a.u. Nd:GdVO4 Raman laser temporal characteristics

Low threshold, diode end-pumped Nd3+:GdVO4 self-Raman laser

“…Now that the Nd 3+ :GdVO 4 crystal was used both as laser and Raman crystal, we cut it along c-axis to reduce the SRS threshold. Although there is a little difference in the Raman scattering cross section between a a-cut and c-cut Nd 3+ :GdVO 4 crystal [14], we believe that it is not the critical aspect compared with the high pulse peak power especially for the low-level pump source.…”

Toward Understanding the Photocatalytic Activity of PbMoO4Powders with Predominant (111), (100), (011), and (110) Facets. A Combined Experimental and Theoretical Study

“…Lead atom has been described by a Hay-Wadt pseudo-potential scheme with large core, HAYWLC-2111dG; molybdenum and oxygen centers by 976-6311d31G and 6-31d1G basis set, respectively, which was taken from the Crystal web site. 81 Becke's three-parameter hybrid non-local exchange functional 82 combined with a Lee-Yang-Parr gradient-corrected correlation functional (B3LYP) 83 was used. Diagonalization of the Fock matrix was performed at adequate k-point grids in the cell parameters (a and c) and internal atomic position for the bulk PbMoO 4 were carried out.…”

Q-switched and mode-locked pulses generation in Nd:GdVO4 laser with dual loss-modulation mechanism

“…With the LiF:F − 2 absorber, self-Raman conversion has also been reported in Q-switched Nd:GdVO 4 laser [15]. However, the generated Q-switched pulsewidth is comparative longer relative to the CW-ML pulses.…”