Progressive pulse dynamics in a mode-locked fiber laser

Feng, Ni; Zhou, Renlai; Wang, Sen; Zhang, Rui; Nakkeeran, K.

doi:10.1016/j.optlastec.2023.109827

Cited by 3 publications

(1 citation statement)

References 49 publications

(62 reference statements)

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“…outstanding advantages in medical diagnosis, micro and nano processing, information communication, data storage, molecular spectroscopy, and other fields [3][4][5][6][7][8][9][10]. To generate an ultrashort laser pulse, a saturable absorber (SA), as a passive nonlinear optical modulator [11,12], plays a crucial role in mode-locked fiber lasers because of its nonlinear optical properties.…”

Section: Introductionmentioning

confidence: 99%

Saturable absorption properties of mixed lead-tin halide perovskites and their application in near-infrared ultrafast lasers

Lan,

Yang,

Wei

et al. 2024

J. Phys. D: Appl. Phys.

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Mixed lead-tin halide perovskites, as highly sensitive materials in the near-infrared region, hold significant potential for optoelectronic device applications. Here, mixed lead-tin halide perovskite saturable absorbers (SAs) have been developed by coupling with the side-polished surfaces of the single-mode fibers and excellent saturable absorption effects of the mixed lead-tin halide perovskite SAs have been demonstrated in the near-infrared region. By constructing the in-gap site assisted carrier transfer mode, the saturation absorption process of the mixed lead-tin halide perovskite SAs can be well explained, in which defects as in-gap sites can help the photon-generated carriers transfer into the conduction band and promote the Pauli-blocking-induced absorption bleaching in the SA. Moreover, ytterbium-doped fiber lasers based on perovskite SAs have been fabricated, and mode-locked operations at 1040 nm are achieved using the mixed lead-tin halide perovskite SA, generating ultra-short pulses with a pulse width of 683 fs, 3dB bandwidth of 4.88 nm, signal-to-noise ratio exceeding 49.74 dB, and a repetition rate of 3.74 MHz. Our findings demonstrate that the mixed lead-tin halide perovskite SAs have excellent optical modulation capability and promising applications in the field of ultrafast photonics.

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