Indium Tin Oxide Coated D-Shape Fiber as a Saturable Absorber for Generating a Dark Pulse Mode-Locked Laser*
Bilal Nizamani, Sameer Salam, A.A.A. Jafry, Norhilmi Mohd Zahir, N. Jurami, Muhammad Imran Mustafa Abdul Khudus, A. Shuhaimi, Effariza Hanafi, Sulaiman Wadi Harun
Abstract
A dark pulse mode-locked laser is experimentally demonstrated using the indium tin oxide (ITO) coated D-shape fiber as a saturable absorber (SA). Using the polishing wheel technique, a D-shape single mode fiber was fabricated. A 60-nm-thick layer of ITO was deposited over the D-shape fiber using the electron beam deposition method. The SA has a saturation intensity of 40.32 MW/cm 2 and a modulation depth of 3.5%. A stable dark pulse mode-locked laser was observed at a central wavelength of 1559.4 nm with repetition rate 0.98 MHz, pulse width 370 ns and signal-to-noise ratio 61 dB.
Topics & Concepts
Materials scienceSaturable absorptionFiber laserOpticsIndium tin oxideOptoelectronicsPulse durationLaserFiberWavelengthLayer (electronics)Composite materialPhysicsAdvanced Fiber Laser TechnologiesPhotonic Crystal and Fiber OpticsLaser-Matter Interactions and Applications