Generation of 15-μm radiation through intracavity solid-state Raman shifting in Ba(NO_3)_2 nonlinear crystals

Optical phonon modes and transmissivity in BaWO4 single crystal

“…SRS allows shifting laser radiation frequency with a certain energy shift that is determined by the crystal structure of Raman materials. At present, the most commonly used Raman-active crystals are Ba(NO 3 ) 2 and KGd(WO 4 ) 2 [8][9][10][11][12]. Among the tungstate crystals, BaWO 4 is proposed to be a universal Raman-active crystal for its high gain in both nano-and pico-second pumping regimes [7,8,13,14].…”

Intracavity optical parametric oscillator pumped by passively Q-switched Nd:YLF laser

“…This bulk absorption greatly increases the optical damage threshold of the eye. Three types of eye−safe lasers are of the practical importance, i.e., lasers with er− bium (Er) doped media directly operating at 1.54 µm wave− length [1][2][3][4][5][6], Raman lasers pumped by pulsed neodymium (Nd) lasers operating at the strongest 1064 nm or 1340 nm lines [7][8][9][10], and optical parametric oscillators (OPO) pum− ped by high peak power Nd lasers [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Spectroscopic investigation of YAG crystal doped with tetrahedrally coordinated V3+ ions

“…This eye-safe wavelength can be generated by various frequency-conversion schemes, for instance, harmonics generation and stimulated Raman scattering laser system [1][2][3][4]. The laser systems with frequency conversion to the eye-safe region require application of an efficient and powerful source of pulse radiation near 1.3 µm that can generate giant pulses.…”