Jung, Minwan Koo, Joonhoi Debnath, Pulak Song, Yong-Won Lee, Ju Han 2024-01-20T13:33:17Z 2024-01-20T13:33:17Z 2022-01-10 2012-11 1882-0778 https://pubs.kist.re.kr/handle/201004/128678 The use of a graphene oxide (GO)-deposited D-shaped fiber as a saturable absorber for mode locking of a thulium-doped fiber laser is experimentally demonstrated. By using the evanescent field interaction of an oscillating beam with GO, a passive mode locking operation at a wavelength of similar to 1.91 mu m is shown to be achievable from a ring cavity. Stable picosecond pulses are readily obtained at a repetition rate of 15.9 MHz. This demonstration confirms that GO is a cost-effective saturable absorber applicable for similar to 2 mu m ultrafast pulse generation. (C) 2012 The Japan Society of Applied Physics English JAPAN SOC APPLIED PHYSICS SATURABLE ABSORBER M WAVELENGTH LOCKING OPTOELECTRONICS A Mode-Locked 1.91 mu m Fiber Laser Based on Interaction between Graphene Oxide and Evanescent Field Article 10.1143/APEX.5.112702 1 APPLIED PHYSICS EXPRESS, v.5, no.11 APPLIED PHYSICS EXPRESS 5 11 scie scopus 000310867800020 2-s2.0-84869197390 Physics, Applied Physics Article SATURABLE ABSORBER M WAVELENGTH LOCKING OPTOELECTRONICS 2 um laser graphene oxide evanescent field interaction mode-locking fiber laser