Ultrafast laser soliton mode-locked at 1.5 mu m region based on Cr2AlC MAX phase as a saturable absorber
Document Type
Article
Publication Date
6-1-2021
Abstract
In this experiment, a passively mode-locked erbium-doped fiber laser was successfully realized by utilizing chromium aluminum carbide (Cr2AlC) MAX phase as a saturable absorber (SA). The Cr2AlC MAX phase was fabricated by casting method with polyvinyl alcohol to compose a thin film. By a 203-m cavity length, a stable mode-locked laser operating at 1559 nm was achieved at the threshold pump power of 121.69 mW with a pulse width of 4.45 ps and pulse rate of 1 MHz. The pulse energy was 0.91 nJ and output power was 0.91 mW at a maximum pump power of 167 mW. As the cavity length was shortened to 103 m, we observed that pulse width, pulse energy, and output power decreased to 2.5 ps, 1.60 nJ, and 3.02 mW, respectively, while the repetition rate increased to 1.88 MHz at a maximum pump power of 167 mW. To the best of our knowledge, this is the first time utilizing Cr2AlC MAX phase SA to produce the pulse laser in the 1.5-mu m region. (C) 2021 Society of Photo-Optical Instrumentation Engineers (SPIE)
Keywords
Cr2AlC max phase, Mode-locked laser, Saturable absorber, Erbium laser
Divisions
fac_eng
Publication Title
Optical Engineering
Volume
60
Issue
6
Publisher
Society of Photo-optical Instrumentation Engineers (SPIE)
Publisher Location
1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA