CAJ | 학술논문

本文利用化学气相沉积法高温分解甲烷在铜箔上制得单层石墨烯薄膜,测量了石墨烯的拉曼光谱.将石墨烯薄膜逐层转移到光纤跳线的氧化锆插芯端面上做成可饱和吸收材料,实验研究了环形腔掺铒光纤脉冲激光器的输出特性,获得了峰值波长为1560.1 nm,3 dB带宽为0.27 nm,重复频率为7.69 MHz,脉冲宽度为58.8 ps的锁模脉冲序列.时间带宽积为1.98,表明脉冲出现了啁啾.最后,通过改变两个光纤活动接头之间的空气腔的长度,激光波长实现了4 nm的调谐.
본문이용화학기상침적법고온분해갑완재동박상제득단층석묵희박막,측량료석묵희적랍만광보.장석묵희박막축층전이도광섬도선적양화고삽심단면상주성가포화흡수재료,실험연구료배형강참이광섬맥충격광기적수출특성,획득료봉치파장위1560.1 nm,3 dB대관위0.27 nm,중복빈솔위7.69 MHz,맥충관도위58.8 ps적쇄모맥충서렬.시간대관적위1.98,표명맥충출현료조추.최후,통과개변량개광섬활동접두지간적공기강적장도,격광파장실현료4 nm적조해.
Single-layer graphene film is fabricated on the copper foil by using chemical vapor deposition method, and the corresponding Raman spectrum is measured. The graphene membrane is transferred to the facet of zirconium oxide of a fiber jumper. The mode-lock Er-doped fiber laser with few-layer graphene membrane as saturable absorber is experimentally studied, which has a ring structure and uses a 10%portion of a fiber coupler as the laser output. The laser generates a pulse train at a 7.69 MHz repetition rate, with a full width at half maximum of 58.8 ps. The corresponding time-bandwidth product is 1.98, indicating that the pulses are chirped. The peak wavelength and 3 dB bandwidth of the laser are 1560.1 nm and 0.27 nm respectively. Through changing the air gap between two the fiber ends, 4 nm wavelength tuning is observed.