Continuous-Wave Nd:YVO_4 self-Raman lasers operating at 1109nm, 1158nm and 1231nm

Abstract

Several continuous-wave Nd:YVO(4) self-Raman lasers based on the primary and secondary Raman transitions of YVO(4) (893cm(-1) and 379cm(-1) respectively) are reported in this paper. Laser outputs were obtained at a wavelength of 1109nm, 1158nm and 1231nm with maximum output powers of 1.0W, 700mW and 540mW respectively. The respective absorbed pump power to Raman output power conversion efficiencies were measured at 8.4%, 5.4%, and 5.4%.

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

“…Its strongest vibrational Raman mode is located at 890 cm −1 with Raman line width of 3.0 cm −1 and Raman gain coefficient of~5 cm/GW [14]. In addition, two weak Raman shifts are 816 and 259 cm −1 with respective Raman gain coefficients of 2.6 and 2.3 cm/GW for c-cut Nd:YVO 4 crystal with Z(XX) scattering configuration [60]; and 840 and 379 cm −1 with respective Raman gain coefficients of 2.6 and 0.9 cm/GW for a-cut Nd:YVO 4 crystal with X(ZZ) scattering configuration [81]. The Nd-doped YVO 4 crystal belongs to the zircon type D 4h tetragonal space group, and its stimulated radiation cross section parallel to the c axis (a-cut, σ = 25 × 10 −19 cm 2 at 1064 nm) is four times higher than the cross section orthogonal to the c axis (c-cut, σ = 6.5 × 10 −19 cm 2 at 1066 nm) [24].…”

Observation ofχ(3)-nonlinear optical effects in stimulated Raman scattering (SRS)-active CsLa(WO4)2crystals: high-order Stokes and anti-Stokes generation and self-Raman CsLa(WO4)2:Nd3+laser converter

“…Its scheme is characterized by its operational simplicity and is thus widely used in many research laboratories (see, e.g. [41,[58][59][60][61] Table 5). Under these experimental conditions the self-SRS lasing spectrum of a CsLa(WO 4 ) 2 :Nd 3+ crystal was recorded, which is shown in Fig.…”

A High Peak Power and High Beam Quality Sub-Nanosecond Nd:YVO4 Laser System at 1 kHz Repetition Rate without SRS Process

“…Laser systems based on end-pumped bulk Nd:YVO 4 crystal have better beam quality because of natural birefringence architecture, which can alleviate thermally induced birefringence [25][26][27]. At the same time, Nd:YVO 4 is a self-excited Raman scattering crystal [28][29][30]. Stimulated Raman scattering (SRS) is a third-order nonlinear optical effect, which must be taken into consideration in high peak power amplification.…”