Now showing items 1-3 of 3

    • Femtosecond pulse generation from a Ti3+: Sapphire laser near 800 nm with voltage reconfigurable graphene saturable absorbers 

      Baylam, Işınsu; Özharar, Sarper; Kakenov, Nurbek; Kocabaş, Coşkun; Sennaroglu, Alphan (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. ...
    • Thin film MoS2 nanocrystal based ultraviolet photodetector 

      Alkis, S.; Öztaş, T.; Aygün L.E.; Bozkurt F.; Okyay, Ali Kemal; Ortaç, B. (Optical Society of American (OSA), 2012)
      We report on the development of UV range photodetector based on molybdenum disulfide nanocrystals (MoS2-NCs). The inorganic MoS2- NCs are produced by pulsed laser ablation technique in deionized water and the colloidal ...
    • ZnO based optical modulator in the visible wavelengths 

      Okyay, Ali Kemal; Aygun, Levent E.; Oruç, Feyza B. (SPIE, 2013)
      In order to demonstrate tunable absorption characteristics of ZnO, photodetection properties of ZnO based thin-film transistors are investigated. By controlling the occupancy of the trap states, the optical absorption ...