Exploiting the etalon effect to manipulate the pulse characteristics of a self-mode-locked Nd:YVO4 laser with a flexible cavity length

Jin, Yuan; Hu, Miao; Xu, Mengmeng; Yan, Hengfeng; Liu, Chong; Chen, Long; Li, Haozhen; Bi, Meihua; Zhou, Xuefang

doi:10.1016/j.optcom.2022.128331

Cited by 4 publications

(1 citation statement)

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“…Because of the Kerr effect of the gain medium, the interaction between the longitudinal modes forms the self-mode-locked pulse trains [14][15][16]. When multimode oscillation occurs, the F-P effect, or spatial hole burning (SHB) effect in a standing-wave resonator leading to longitudinal modes grouping, changes the self-mode-locked pulse waveforms to the burst pulse waveforms [17][18][19][20][21]. In the experiment, by adjusting the optical length of the gain medium and laser cavity, output burst pulse trains with different characteristics were achieved.…”

Section: Theoretical Modelmentioning

confidence: 99%

Time–Frequency and Spectrum Analyses of All-Solid-State Self-Mode-Locked Burst Pulse Lasers

Xu,

Hu,

et al. 2024

Photonics

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The theoretical and experimental characteristics of all-solid-state self-mode-locked burst pulse lasers are investigated in this study. The time–frequency and spectrum analyses of the lasers incorporating Fabry–Pérot (F-P) structures are presented, along with the development of the corresponding theoretical model. Self-mode-locked burst pulse lasers are experimentally constructed to reduce intracavity losses using the front and rear end surfaces of the gain media to form F-P structures. When the laser cavity length is 600 mm and the gain media lengths are 5, 6, and 10 mm, each burst pulse produced contains 56, 47, and 28 subpulses, respectively, with the same burst pulse width of 2 ns. The burst pulse train with beam quality M2 = 1.37 and an average output power of 0.23 W is obtained when the gain medium length is 5 mm and the pump power is 4.5 W. The corresponding burst pulse repetition frequency is 0.25 GHz and the subpulse repetition frequency is 13.66 GHz. The time–frequency spectral analyses of the laser signals provide a good representation of laser spectral information that even the currently available highest-resolution spectrometers cannot resolve.

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