関連する実験動画
Updated: Jun 19, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
Published on: November 11, 2013
Nd:YAG発振器および後続のKTA-OPOにおけるスポット欠陥制御によるスイッチ可能なガウシアンビームと渦ビーム
Abstract:
Tunable laser sources capable of controlling the spatial structure of light fields are of great significance for multimodal laser physics and structured beam studies. To achieve efficient and flexible mode switching, we for the first time, to the best of our knowledge, propose and demonstrate an electro-optic Q-switching Nd:YAG laser oscillator capable of switching between Gaussian and vortex beams through spot-defect modulation. By introducing a spot-defect on the surface of a quarter-wave plate and adjusting its rotation angle, rapid switching between Gaussian and vortex beams is realized within the stable Q-switching operation region, yielding pulse energies of 4.08 mJ and 4.10 mJ for the Gaussian and vortex beams, respectively, at a repetition rate of 1 kHz. Furthermore, when employed as the pump source for a KTiOAsO4-based optical parametric oscillator (OPO), the system maintains consistent mode-switching behavior and excellent output performance in the mid-infrared region (∼3.5 µm).
関連する概念動画
Oscillations about an Equilibrium Position
Damped Oscillations
Although friction and other non-conservative...
Oscillations In An LC Circuit
Standing Waves in a Cavity
Deformation in a Circular Shaft
Residual Stresses in Circular Shafts

