Mode-locking operation of an Er-doped fiber laser with (PEA)₂(CsPbBr₃)_n−1PbBr₄ perovskite saturable absorbers

Abstract

Organic-inorganic hybrid perovskite materials have recently attracted considerable interests owing to their excellent optoelectrical properties, good environmental stability and variety of applications. The quasi-2D perovskite is also expected to have...

Mode-locking pulse generation based on lead-free halide perovskite CsCu2I3 micro-rods with high stability

“…Recently, perovskite-based SAs have been applied in Q-switching and mode-locking fiber lasers. 31,56–59 Li et al found that organic–inorganic halide perovskite CH 3 NH 3 PbI 3 exhibited a larger nonlinear absorption coefficient and a low saturable intensity, and demonstrated an ultrafast picosecond pulsed fiber laser based on CH 3 NH 3 PbI 3 -SA. 56 Similarly, the SA has also been employed in the erbium-doped fiber (EDF) laser cavity.…”

“…In the past few years, perovskites have also been incorporated into fiber lasers as the SA to generate ultrashort pulses in fiber laser systems, emerging as a promising candidate for novel optoelectronic devices. 29–32 As a representative of the perovskite family, lead halide perovskite nanomaterials have attracted tremendous attention for many appealing properties, 33–36 such as high carrier mobility, 37 tunable bandgaps, 38 high photoluminescence quantum yields, and long carrier diffusion length, 39 which sprung them into a plethora of optoelectronic applications including LEDs, 40,41 solar cells, 42 PDs, 43 nanolasers, 44 and other optoelectronic devices. 45 However, the toxicity of lead-based perovskites and instability against moisture, air, heat, and irradiation have caused significant concern to the ecological environment and human health, inhibiting the large-scale commercial and scientific applications of lead halide perovskites.…”