Ultrafast optical nonlinearity of multi-layered graphene synthesized by the interface growth process
- Ultrafast optical nonlinearity of multi-layered graphene synthesized by the interface growth process
- 김원준; 장유민; 이준수; 강동석; 이주한; 송용원
- graphene; nonlinearity; optical fiber; mode-locked laser; saturable absorber
- Issue Date
- VOL 23, NO 22, 225706-1-225706-5
- We propose a novel photonic application as well as an optical tool to verify the crystallinity of
interface-grown graphene demonstrating passive mode-locked lasers. The interface growth
process enables the formation of multi-layered graphene at an interface of substrate and
catalyst, therefore directly onto the targeted substrate without a transfer process. The
synthesized graphene is characterized using Raman spectroscopy and x-ray photoelectron
spectroscopy before ultrashort pulse formation to confirm the validity of the process for
high-speed photonic applications of graphene. The resultant pulses have a repetition rate,
pulse duration, RF extinction ratio of 14.01 MHz, 1.0 ps, and ~35 dB, respectively.
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- KIST Publication > Article
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