Fig 1.
(a) Schematic of the experimental setup, (b) Stability Diagram of all laser resonators. (a) the schematic diagram of the experimental setup for the laser diode (LD) array dual-end pumped Yb:YAG slab laser, which emitted at a wavelength of 1030 nm. (b) shows a plot of the stability interval distribution of a resonator, with the positively branched and negatively branched unstable regions labeled, and the shaded region indicating the stable resonator region.
Table 1.
Parameters for the calculation of the Yb:YAG slab laser and structural details of the mixing resonator configuration.
Fig 2.
Near-field phase distribution(a), light intensity distribution(b) in unstable resonator mode. The gama is an eigenvalue of the eigenvector method of simulation for calculating the oscillatory modes in an unstable resonator. The x and y axes represent the size of each mode scale, and the z axis represents the phase (Fig 2(a)) and the normalized light intensity (Fig 2(b)).
Fig 3.
Laser output power curves for the unstable resonator at different transmittances.
an observation can be made that the optical-to-optical conversion efficiency was highest when the transmittance was 60%, making it the most suitable for the operation of this laser system.
Fig 4.
(a) Pump current in direct relation to M2 factor and output power; (b) the output spectrum at 1030nm. (a) the pump current was set to 40A, 50A, 60A, 70A, 80A, and 90A, M2 beam analyzer measurements were conducted to assess the M2 factor curves and near-field spot diagrams in both the horizontal (x direction) and vertical (y direction) directions. (b) the spectral widths at 1030nm.
Fig 5.
Time stability of the output power at 3823W.
Fluctuations in the output power within 200 seconds, indicating a time stability of less than 1.26%.