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http://dx.doi.org/10.3807/KJOP.2014.25.6.340

Passively Mode-Locked 1.93-㎛ All-Fiberized Femtosecond MOPA Laser Using a Gold-Deposited Side-Polished Fiber  

Jung, Minwan (School of Electrical and Computer Engineering, University of Seoul)
Koo, Joonhoi (School of Electrical and Computer Engineering, University of Seoul)
Lee, Ju Han (School of Electrical and Computer Engineering, University of Seoul)
Publication Information
Korean Journal of Optics and Photonics / v.25, no.6, 2014 , pp. 340-345 More about this Journal
Abstract
We experimentally demonstrate the use of a gold-deposited side-polished fiber as a $2-{\mu}m$-band polarizing device to produce mode-locked pulses from a thulium/holmium-codoped fiber ring cavity. The mode-locking effect was induced by nonlinear transmission caused by the gold-deposited side-polished fiber, due to nonlinear polarization rotation of the oscillated beam within the fiberized cavity. It is also shown that ~558-fs pulses with a peak power of ~6.7 kW could readily be produced at a wavelength of 1935 nm through subsequent thulium/holmium-codoped fiber amplification, due to the higher-order soliton compression effect.
Keywords
Mode-locked laser; Fiber Laser; Thulium-doped fiber;
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