Linear two-frequency laser-diode-pumped continuous-wave Nd3+:YAG laser with a phase-anisotropic cavity

Diode-pumped Nd:YAG laser with linear and orthogonal polarized components of a radiation at the wavelength 0.532 μm

“…A quartz crystal wedge was used as a phaseanisotropic element. We were able to adjust continuously the frequency distance between the split modes by varying the position of the wedge in the direction perpendicular to the optical axis of the cavity [2]. LBO crystals with a length of 5 mm (θ = 90 • , ϕ = 11.6 • ) and cross-section 3 × 3 mm 2 were chosen for frequency doubling.…”

“…The mode interval and the emission spectra of the fundamental and second harmonic were controlled continuously in the experiments. Mode intervals in the range 5.0 MHz< ω 12 < 1.5 GHz were recorded using a spectrum analyzer, while mode intervals greater than 1.5 GHz were measured using the calibrated wedge method [2]. The emission spectra of the fundamental and second harmonic were monitored using scanning interferometers.…”

“…Double-mode solid-state lasers are widely used in fundamental scientific research and in various applications [1][2][3]. Double-mode lasers (DMLs) have potential for use in the creation of precise ranging systems.…”

Influence of the intracavity second harmonic generation on the mode competition in a double-mode diode-pumped Nd:YAG laser

“…There are many publications concerning the mode interaction in solid-state lasers [4][5][6][7]. Generally, in publications concerning double-mode Nd:YAG lasers with intracavity second harmonic generation (ICSHG) [8][9][10][11], the conditions of steady-state lasing at the fundamental and second harmonic are analyzed.…”