Browsing by Keywords "Voltage-controlled"
Now showing items 1-5 of 5
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Femtosecond pulse generation from a Ti3+: Sapphire laser near 800 nm with voltage reconfigurable graphene saturable absorbers
(OSA - The Optical Society, 2017)We experimentally show that a voltage-controlled graphene-gold supercapacitor saturable absorber (VCG-gold-SA) can be operated as a fast saturable absorber with adjustable linear absorption at wavelengths as low as 795 nm. ... -
Graphene supercapacitor as a voltage controlled saturable absorber for femtosecond pulse generation
(OSA, 2014)For the first time to our knowledge, we employed a graphene supercapacitor as a voltage controlled saturable absorber at bias voltages of 0.5-1V to generate 84-fs pulses from a solid-state laser near 1255 nm. -
Graphene-gold supercapacitor as a voltage controlled saturable absorber for femtosecond pulse generation
(Optical Society of America, 2016-02)We report, for the first time to the best of our knowledge, use of a graphene-gold supercapacitor as a voltage controlled fast saturable absorber for femtosecond pulse generation. The unique design involving only one ... -
Graphene-gold supercapacitor as a voltage-controlled saturable absorber for femtosecond pulse generation
(OSA, 2015)We report, for the first time to our knowledge, a voltage-controlled graphene-gold supercapacitor saturable absorber, as a modulator with adjustable insertion loss for low-gain mode-locked lasers. Nearly transform-limited, ... -
Tunable visible response of ZnO thin-film phototransistors with atomic layer deposition technique
(IEEE, 2012)We fabricated TFPT with 14-nm-thick n-ZnO channel at 80°C by ALD technique. The drain to source photocurrent due to UV photons can be tuned by changing gate voltage. We also observed that the absorption of sub-bandgap ...
