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Mode‐Locking of All‐Fiber Lasers Operating at Both Anomalous and Normal Dispersion Regimes in the C‐ and L‐Bands Using Thin Film of 2D Perovskite Crystallites
Author(s) -
Hong Seongjin,
Lédée Ferdinand,
Park Jaedeok,
Song Sanggwon,
Lee Hyeonwoo,
Lee Yong Soo,
Kim Byungjoo,
Yeom DongIl,
Deleporte Emmanuelle,
Oh Kyunghwan
Publication year - 2018
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201800118
Subject(s) - materials science , crystallite , femtosecond , optoelectronics , optics , laser , thin film , dispersion (optics) , fiber laser , saturable absorption , group delay dispersion , wavelength , dispersion shifted fiber , fiber , nanotechnology , physics , fiber optic sensor , metallurgy , composite material
Two‐dimensional hybrid organic–inorganic perovskites have recently attracted attention in various optoelectronic applications. A novel thin film of 2D perovskite (C 6 H 5 C 2 H 4 NH 3 ) 2 PbI 4 crystallites is synthesized and its nonlinear optical properties are experimentally investigated within the optical gain of an Erbium‐doped fiber. Utilizing its unique nonlinear optical response, efficient mode‐locking of an all‐fiber Erbium laser is demonstrated at the anomalous dispersion regime in both the C‐ and L‐bands stably generating femtosecond pulse trains, where the thin film of 2D perovskite crystallites function as an in‐line saturable absorber. At this anomalous dispersion regime, self‐started femtosecond pulses are generated whose center wavelength are tuned from 1565.9 nm in C‐band and 1604 nm in L‐band by adjusting the optical gain. Furthermore, by managing the chromatic dispersion of the total fiber laser cavity to reach the normal dispersion regime, a stable dissipative soliton is successfully generated in the C‐band with the spectral bandwidth of 15 nm and pulse duration of 3.2 ps. Detailed material properties of the thin film of 2D perovskite crystallites, their characterization, and fiber laser mode‐locking performance is reported.