Yttrium oxide as a Q-switcher for the near-infrared erbium-doped fiber laser

Abstract

Yttrium oxide (Y 2 O 3 ) has been widely used in metal-reinforced composites, microelectronics, waveguide lasers, and high-temperature protective coatings because of its good physical and photoelectric properties. However, few studies have been done on the nonlinear optical applications of Y 2 O 3 as saturable absorbers (SAs) in fiber lasers so far. Here, a passively Q-switched nearinfrared fiber laser using Y 2 O 3 as a Q-switching device is demonstrated. The optical nonlinear properties of the Y 2 O 3 SA prepared by the magnetron sputtering method were measured by the twin-detector measurement technique, and the modulation depth of the proposed Y 2 O 3 SA was found to be 46.43%. The achieved Q-switched laser delivers an average output power of 26 mW at 1530 nm with a pulse duration of 592.7 ns. To the best of our knowledge, this is the first report on the optical nonlinearity of Y 2 O 3 as a Q-switcher for the near-infrared fiber laser, which may deepen the understanding of the optical nonlinear properties of Y 2 O 3 and make inroads into the potential market of optical modulation and optoelectronic devices.

Bimetallic solid solution MAX phase Ti2NbAlC2 as saturable absorber for passively Q-switched Er3+-doped fiber laser

“…With the pump power increased from 180 mW to 300 mW, the repetition rate of the Q-switched laser increased from 17.30 kHz to 32.56 kHz, and the corresponding pulse width decreased from 7.94 µs to 3.67 µs. The less transformation of pulse duration at high pump power indicates that the SA device is about to saturate [33,46]. In addition, with the increase of pump power from 180 mW to 300 mW, the output power almost linearly increased from 0.26 mW to 1.08 mW, while the pulse energy increased from 15.30 nJ to 33.14 nJ.…”

Metal oxide stabilized zirconia modified bio-derived carbon nanosheets as efficient electrocatalysts for oxygen evolution reaction

“…is attributed to sp 2 of C-C[52]. The XPS results demonstrate that the sp 2 bonds are dominant in the carbon layer on YSZ composite.…”

Passively Q-Switched Er-Doped Fiber Laser Based on Bentonite Clay (Al2H2O6Si) Saturable Absorber

“…In the following, we investigated the Q-switching pulse characteristics of EDFLs. Q-switched EDFLs have many applications in a variety of fields containing material processing [11], spectroscopy [12], medical [13], optical communication [14], range finding [15],…”