Passively Q-switched fibre laser based on a saturable absorber of siloxane

Abstract

A passively Q-switched fiber laser using a novel saturable absorber (SA) of Siloxane has been demonstrated. The modulation depth of the SA is measured to be 4.87%. Based on such an SA, the Q-switched operation in the laser has been achieved. The average output power of the Q-switched fiber laser is 0.78 mW with a pulse repetition rate of 21.3 kHz. The pulse energy goes up to 36.62 nJ when the pump power of the laser is 200 mW. The Q-switched laser exhibits the performances of self-starting, good stability, and high pulse energy. To the best of our knowledge, it is the first demonstration of the passively Q-switched laser based on a siloxane SA.

Aluminum nanoparticles saturable absorber as a passive Q-switcher for erbium-doped fiber laser ring cavity configuration

“…Saturable absorbers (SAs) as passive elements have contributed significantly to the field of short and ultrashort optical pulse generation. They have been widely used to produce passively Q-switched fiber lasers, which have undergone extensive investigation owing to their widespread applications in the fields of optical communication, sensing, spectroscopy, and material processing [1][2][3][4]. Compared to active Q-switching techniques, passive methods are more favorable due to their inherent features of compactness, easy fabrication, and costeffective design [5,6].…”