Mode-locked bismuth-based erbium-doped fiber laser with stable and clean femtosecond pulses output

Abstract

A passively mode-locked fiber ring laser is demonstrated using a 49 cm long bismuth oxide based erbium-doped fiber (Bi-EDF) and a fast semiconductor saturable absorber. Stable and clean short pulses are achieved because of these short and high nonlinear characteristics of the Bi-EDF. The laser operates at 1560 nm with a repetition rate of 8.3 MHz and a center wavelength of 1560 nm. The calibrated auto-correlator pulse trace of the laser shows a sech 2 pulse shape, with an estimated pulse width of 340 fs.

Linear-cavity fiber laser in nearly single-frequency operation using Faraday rotator mirror

“…Fiber lasers with merits of all optics and compatible fiber connectors have attracted people much and been intensively studied for since 1990s [1,2]. The most popular issues, either in ring cavity schemes or in lin ear cavity schemes, are multi wavelength fiber lasers [3], tunable fiber lasers [4], high efficiency fiber lasers [5], single frequency fiber lasers [6,7] and so on.…”

“…In this letter we propose and demonstrate single fre quency selection for a Faraday rotator mirror (FRM) based on a linear cavity fiber laser configuration, to obtain a stable, high output power fiber laser with nar row linewidth. 1 The article is published in the original.…”

Mode-locked Thulium Ytterbium co-Doped Fiber Laser with Graphene Saturable Absorber

“…Up to now, most ultra-short pulse fiber lasers have adopted passive mode-locking technology, in which saturable absorbers (SAs) act as a key part [4][5][6]. Various types of SAs have been attempted such as a semiconductor saturable absorption mirror (SESAM) [4], carbon nanotubes (CNTs) [5] and graphene [6].…”

“…Various types of SAs have been attempted such as a semiconductor saturable absorption mirror (SESAM) [4], carbon nanotubes (CNTs) [5] and graphene [6]. Among them, SESAMs are the most widely used SA owing to their high flexibility and stability.…”

Switchable pulse and multi-wavelength laser based on non-linear polarization rotation

“…Pulse laser and multi-wavelength laser are of interest among researchers for many decades due to their versatile applications. To date, various techniques have been proposed for generating ultra-short pulse laser such as active mode locking by using an external modulator and the utilization of saturable absorbers such as semiconductor saturable absorber mirror (SESAM) [5], grapheme [6] and carbon nanotube [7]. On the other hand, multi-wavelength laser can be achieved by utilizing the nonlinear effects such as stimulated brillouin scattering (SBS) [8] and four wave mixing [9].…”