Ryu, Bowon Lee, Sungjae Kim, Jin Tae Song, Yong-Won 2024-01-19T21:31:52Z 2024-01-19T21:31:52Z 2021-09-05 2018-11 0003-3804 https://pubs.kist.re.kr/handle/201004/120734 Photonic integrated circuits (PICs) are notable for their enhanced functionalities with material flexibilities to find applications in wearable high-speed data management systems. Due to the miniaturized dimensions of PICs, the employment of a nanomaterial having significant optical nonlinearity is critical. Here, it is demonstrated that a polymer waveguide can be harmonized with nonlinear graphene to form ultrashort laser pulses. The graphene works as nonlinear saturable absorber on the polymer waveguide prepared with a perfluorinated acrylic resin. The evanescent field of a laser propagating through the waveguide interacts with graphene to induce intracavity intensity modulation for femtosecond-scale pulse formation. The laser output is characterized quantitatively as the central wavelength, spectral width, repetition rate, extinction ratio, and pulse duration, which are 1553.32 nm, 10.21 nm, 4.18 MHz, 76.03 dB, and 874 fs, respectively. Stable operation is verified over 3 h. English WILEY-V C H VERLAG GMBH RAMAN-SPECTROSCOPY FABRICATION FIBER FIELD Efficient Optical Saturable Absorbers with Graphene on Polymer Waveguides for Femtosecond Laser Pulse Formation Article 10.1002/andp.201800249 1 ANNALEN DER PHYSIK, v.530, no.11 ANNALEN DER PHYSIK 530 11 scie scopus 000450018300008 2-s2.0-85055277293 Physics, Multidisciplinary Physics Article RAMAN-SPECTROSCOPY FABRICATION FIBER FIELD graphene mode-locking polymer waveguides saturable absorbers ultrafast pulses