Optimization of passive Q-switched fiber laser employing MAX phase chromium aluminum carbide film

Document Type

Article

Publication Date

3-1-2024

Abstract

In this work, we proposed a mechanical exfoliation technique to compose a saturable absorber (SA) from MAX phase chromium aluminum carbide (Cr2AlC). The performance of a passive Q-switched erbium-doped fiber laser (EDFL) based on Cr2AlC-SA was experimentally demonstrated. The optical properties of SA showed appropriate nonlinear absorption, with a non-saturable absorption of 92.5%, and saturable absorption of 1.2%. The proposed EDFL was investigated using 50:50 and 80:20 output couplers (OCs). At 167 mW pumping power and 3 dB OC, the EDFL produced pulses with 2 mu s width, and 163 kHz repetition rate. Moreover, with 80:20 OC, the EDFL produced shorter laser pulses with 1.46 mu s width, and 135.2 kHz pulsing rate. The results reveal that the higher repetition rate with high energy can be obtained with a 3 dB coupler, while narrower pulse width is achieved with an 80:20 OC.

Keywords

max phase Cr2AlC, mechanical exfoliation technique, output couplers, passive Q-switched fiber lasers, saturable absorber

Publication Title

Microwave and Optical Technology Letters

Divisions

sch_ecs

Volume

66

Issue

3

Publisher

Wiley

Publisher Location

111 RIVER ST, HOBOKEN 07030-5774, NJ USA

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