Demonstration of high self-Raman laser performance of a diode-pumpedSrMoO_4:Nd^3+ crystal

Abstract

Passively Q-switched self-Raman laser oscillations in the SrMoO4:Nd3+ crystal optically pumped by a laser diode (LD) at 804 nm are demonstrated for the first time to our knowledge. Output parameters of LD-pumped SrMoO4:Nd3+ laser were investigated in free-running, passively Q-switched, and self-Raman regimes of laser operation, over a wide range of pulse repetition rates (8.5-85 kHz). A pulse energy of 21 microJ was measured in the self-Raman regime at 1163 nm (first Stokes) wavelength, which is 6 times higher than that for the GdVO4:Nd3+ self-Raman laser of similar design.

Stimulated Raman Scattering in Alkali-Earth Tungstate and Molybdate Crystals at Both Stretching and Bending Raman Modes under Synchronous Picosecond Pumping with Multiple Pulse Shortening Down to 1 ps

“…To date, such crystals were widely used in a great number of crystalline Raman lasers where the most intense Raman mode with the highest wavenumber of ν 1~8 79-925 cm −1 corresponding to totally symmetric stretching internal vibration of the crystal anionic group was utilized . These crystals can also be doped with rare-earth ions of Nd 3+ , Er 3+ , Tm 3+ and Ho 3+ [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] to combine lasing and SRS properties in one active crystal for compact self-Raman laser operation in contrast to the most popular CVD-diamond [54,55] and Ba(NO 3 ) 2 [56,57] crystals which have an advantage of the highest Raman the synchronously pumped BaWO 4 Raman laser operation with high efficiency (up to 39%) and high output pulse energy (up to 53 nJ) of the SRS radiation with the combined (ν 1 + ν 2 ) Raman shift and strong pulse shortening (down to 3 ps) increasing the output peak power up to 9.6 kW at 1227 nm which was even higher than the pump peak power (6.1 kW) at 1063 nm.…”

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

“…The a-cut Nd:SrMoO 4 crystal has a peak emission cross section of 3 × 10 −19 cm 2 and fluorescence decay time of 180 ms. Its Raman gain coefficient (5.7 cm/GW) is comparable to those of YVO 4 and GdVO 4 crystals [109]. The Raman shift of Nd:SrMoO 4 crystal is 887 cm −1 with line width of 2.5 cm −1 [107].…”

“…The Raman shift of Nd:SrMoO 4 crystal is 887 cm −1 with line width of 2.5 cm −1 [107]. In 2009, Basiev et al [109] demonstrated a PQS Nd:SrMoO 4 self-Raman laser, as exhibited in Figure 7. Maximum pulse energy of 21 µJ was obtained at a wavelength of 1163 nm.…”

Morphological Evolution of SrMoO4Crystals from Wires to Notched Spheres through Oriented Attachment

“…[6][7][8][9] SrMoO4 is an important optical material that is widely used in Raman converters and solid-state lasers. 10,11 However, only a few groups have examined synthetic methods for the fabrication of assembled SrMoO4 structures. SrMoO4 nanorods were synthesized via a hydrothermal reaction.…”