Oxygen vacancy engineering of MOF-derived ZnO/Co₃O₄ nanocomposites for high harmonic mode-locking operation

Abstract

In this work, we successfully prepared ZnO/Co3O4 nanocomposites with different oxygen vacancy concentrations by calcining core-shell ZIF-8@ZIF-67. ZnO/Co3O4 nanocomposites possessed remarkable nonlinear optical (NLO) properties in the near-infrared region. ZnO/Co3O4...

Enhanced nonlinear optical response and ultrafast carrier dynamics in amorphous Fe-doped ZIF-67

“…2(e), where the Co 2p 3/2 peak is the main peak and the Co 2p 1/2 peak is the shoulder peak. Co 2p 3/2 consists of Co 3+ with a binding energy of 780.4 eV, 34 Co 2+ with a binding energy of 782.6 eV, 35 and two satellite peaks with a binding energy of 785.5 eV and 788.8 eV. 35,36 Co 2p 1/2 is composed of Co 3+ (796.18 eV) and satellite peak (802 eV).…”

Application of Pr-MOFs as saturable absorbers in ultrafast photonics

“…61 Prepared ZnO/Co 3 O 4 nanocomposites by calcining core-shell ZIF-8@ZIF-67 as SAs were successfully applied to an erbium-doped fiber laser (EDFL) for the first time by Kong et al Fundamental and harmonic (242nd and 181st order) mode-locked pulses were obtained. 62 Dong et al introduced ZIF-8 into a ytterbium-doped fiber laser (YDFL) and obtained stable dissipative soliton mode-locked operation with a pulse width of 21.3 ps. 63 The generation of femtosecond-scale pulses in the 1.5 mm region using SAs based on rGO-Co 3 O 4 and rGO-ZIF-67 was reported by An et al 64 ZIF-8 and ZIF-67 are the MOF materials that are more concentrated in the current research.…”

“…Fundamental and harmonic (242nd and 181st order) mode-locked pulses were obtained. 62 Dong et al introduced ZIF-8 into a ytterbium-doped fiber laser (YDFL) and obtained stable dissipative soliton mode-locked operation with a pulse width of 21.3 ps. 63 The generation of femtosecond-scale pulses in the 1.5 μm region using SAs based on rGO-Co 3 O 4 and rGO-ZIF-67 was reported by An et al .…”

Zirconium pentatelluride as saturable absorber for 2 μm ultrafast solid-state laser

“…5,6 Very recently, novel 2D materials such as ZIFs, transition metal oxides (TMOs) and composites have been extensively applied in passively mode-locked laser experiments. [7][8][9][10][11][12] Dong et al successfully obtained a 1 mm passively mode-locked laser with TiO 2 /CuO composite SAs, indicating their great potentials in ultrafast laser modulation. 9 Among them, for 2 mm solidstate lasers, only graphene and Bi 2 O 2 Se have successfully been used to achieve CWML laser operation.…”