Cadmium Selenide Polymer Microfiber Saturable Absorber for Q-Switched Fiber Laser Applications

Abstract

We demonstrate the generation of a Q-switching pulse train in an erbium-doped fiber laser (EDFL) cavity using a newly developed cadmium selenide (CdSe) based saturable absorber (SA). The SA is obtained by embedding CdSe nanomaterials into a polymethyl methacrylate (PMMA) microfiber. It is incorporated into an EDFL cavity to generate a Q-switched laser operating at 1533.6 nm. The repetition rates of the produced pulse train are tunable within 37–64 kHz as the pump power is varied from 34 mW to 74 mW. The corresponding pulse width reduces from 7.96 μs to 4.84 μs, and the maximum pulse energy of 1.16 nJ is obtained at the pump power of 74 mW.

Soliton mode-locking in thulium-doped fibre laser by evanescent field interaction with reduced graphene oxide-titanium dioxide saturable absorber

“…As shown in the figure, the experimental data fits well with the saturation model equation [46], which provides a modulation depth and saturation intensity of 14.5% and ~7 kW cm −2 respectively. The measured modulation depth in this work is comparable to that of other SA materials such as MoS 2 at 10.7% [47] CdSe at 11% [48] and black phosphorus at 16% [49].…”

Generation of mode-locked pulses based on D-shaped fiber with CdTe as a saturable absorber in the C-band region

“…The Q-switched laser had a repetition rate of 37 kHz to 64 kHz at the pump power range of 34.0 mW to 74.0 mW. 63 The result shows the suitability of CdTe to be explored in the generation of ultrashort pulses in optical ber lasers. Hence, CdTe, can be of interest to explore the generation of ultrashort pulses in optical ber lasers.…”

“… 62 However, there are only a few reports on using CdTe for generating pulsed outputs in fiber laser systems. Rosol et al 63 proposed a Q-switching laser in an EDFL cavity using cadmium selenide deposited onto poly-methyl methacrylate (PMMA) microfiber. The Q-switched laser had a repetition rate of 37 kHz to 64 kHz at the pump power range of 34.0 mW to 74.0 mW.…”

Silver sulfide as Q‐switcher and mode‐locker in Erbium‐doped fiber laser cavity

“…Conventionally, these lasers were realized using an active method employing an optical modulation device. In comparison with this method, the passive method is less complicated while offering many advantages in terms of price, practicality, simplicity, and compactness 5 . The passive technique utilizes a saturable absorber (SA) device such as semiconductor saturable absorber mirrors (SESAMs), 6 carbon nanotubes (CNTs) 7 and two‐dimensional (2D) semiconductor nanomaterials including graphene, 8 transition metal dichalcogenides, 9 topological insulators, 10,11 and black phosphorus 12 .…”