Qi Yunxuan, Zhang Sasa, Ye Zhibin, Li Xiaoran, Jiang Shu
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Multi-mode stable, megawatt peak power Nd: YAG laser
High-average-power, megawatt-peak-power solid-state lasers with high beam quality have garnered significant attention in the field of laser cleaning applications. This paper presents a 1064 nm diode-pumped Nd: YAG master oscillator power amplifier (MOPA) system employing a multi-mode stable resonator. The designed resonator exhibits minimal beam quality variation when operating in the second stability zone, combining excellent power scalability with remarkable multi-mode stability. A flexible beam delivery system incorporating a 400-µm-core-diameter optical fiber demonstrates exceptional performance, achieving coupling efficiency exceeding 95% at a maximum average output power of 701 W with 20 kHz repetition frequency. Furthermore, it reaches a peak power of 1.0 MW at 12 kHz repetition frequency while maintaining 588 W average power output. Experimental results confirm that this innovative design successfully balances high-power operation with beam quality preservation and efficient energy transmission.
期刊介绍：
Features publication of experimental and theoretical investigations in applied physics
Offers invited reviews in addition to regular papers
Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more
94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again
Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field.
In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.
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