节点文献
High-power picosecond terahertz-wave generation in photonic crystal fiber via four-wave mixing
【Author】 Huihui Wu,Hongjun Liu,Nan Huang (State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Science (CAS),Xi’an,710119)
【摘要】 <正>Generation of picosecond terahertz(THz)-wave via four-wave mixing in a photonic crystal fiber (PCF) was demonstrated.This was accomplished by using a dispersion-flattened octagonal photonic crystal fiber(O-PCF),which was reported with such major attractive features as low confinement loss,smaller effective area,and wideband single-mode operation.Perfect phase matching was achieved by operating near zero-dispersion wavelength(1.55 um) in O-PCF.Using this method,when the energy-conservation and phase-matching conditions were satisfied,THz waves can be generated across the frequency range 7.07-7.74 THz.As a result of that,both phase-matching curve and related THz frequencies are shown in Fig.1(a).Through changing the length of O-PCF ranging from 5.30 cm to 7.30 cm,the peak power of 7.42 THz-wave has got a maximum value of 2.55 W at 6.25 cm.Consequently,the peak power of 2.55 W and the peak conversion efficiency of more than -66.65 dB at 7.42 THz are realized with a pump peak power of 2 kW in a 6.25-cm-long O-PCF.Moreover,the temporal domain pulse of the THz waves tuned from 7.07 THz to 7.74 THz along a 6.25-cm-long O-PCF is shown in Fig.1(b).Although these tuning ranges of THz waves are narrow,we could use dispersion-controlled PCFs to obtain wide tuning characteristics.This method and results demonstrate a promising way to realize a reasonable,easy to use,compact THz-wave source.
【Abstract】 Generation of picosecond terahertz(THz)-wave via four-wave mixing in a photonic crystal fiber (PCF) was demonstrated.This was accomplished by using a dispersion-flattened octagonal photonic crystal fiber(O-PCF),which was reported with such major attractive features as low confinement loss,smaller effective area,and wideband single-mode operation.Perfect phase matching was achieved by operating near zero-dispersion wavelength(1.55 um) in O-PCF.Using this method,when the energy-conservation and phase-matching conditions were satisfied,THz waves can be generated across the frequency range 7.07-7.74 THz.As a result of that,both phase-matching curve and related THz frequencies are shown in Fig.1(a).Through changing the length of O-PCF ranging from 5.30 cm to 7.30 cm,the peak power of 7.42 THz-wave has got a maximum value of 2.55 W at 6.25 cm.Consequently,the peak power of 2.55 W and the peak conversion efficiency of more than -66.65 dB at 7.42 THz are realized with a pump peak power of 2 kW in a 6.25-cm-long O-PCF.Moreover,the temporal domain pulse of the THz waves tuned from 7.07 THz to 7.74 THz along a 6.25-cm-long O-PCF is shown in Fig.1(b).Although these tuning ranges of THz waves are narrow,we could use dispersion-controlled PCFs to obtain wide tuning characteristics.This method and results demonstrate a promising way to realize a reasonable,easy to use,compact THz-wave source.
- 【会议录名称】 全国第15次光纤通信暨第16届集成光学学术会议论文集
- 【会议名称】全国第15次光纤通信暨第16届集成光学学术会议
- 【会议时间】2011-06-26
- 【会议地点】中国陕西西安
- 【分类号】TN253
- 【主办单位】中国光学学会纤维光学与集成光学专业委员会、中国通信学会光通信委员会、中国电子学会通信学分会