We apply two-photon resonant nondegenerate four-wave mixing with a resonant intermediate state for the obser- vation of Rydberg states in sodium vapour. The broadening and shift of the sodium 3S- 11D transition pertur...We apply two-photon resonant nondegenerate four-wave mixing with a resonant intermediate state for the obser- vation of Rydberg states in sodium vapour. The broadening and shift of the sodium 3S- 11D transition perturbed by argon are investigated. This technique can achieve Doppler-free resolution of narrow spectral structures of Rydberg levels if lasers with narrow bandwidths are employed.展开更多
We demonstrated a phase-sensitive method for studying the Raman-enhanced nondegenerate four-wave mixing(RENFWM).The reference beam is another four-wave mixing signal,which propagates along the same optical path as the...We demonstrated a phase-sensitive method for studying the Raman-enhanced nondegenerate four-wave mixing(RENFWM).The reference beam is another four-wave mixing signal,which propagates along the same optical path as the RENFWM signal.This method is used for studying the phase dispersion of the third-ordersusceptibility X^((3))and for the optical heterodyne detection of the RENFWM signal.展开更多
The effects of field correlation on Raman-enhanced nondegenerate four-wave mixing(REN-FWM)have been investigated by examining the RENFWM spectra as a function of time delay between two beams.An enhancement of the rati...The effects of field correlation on Raman-enhanced nondegenerate four-wave mixing(REN-FWM)have been investigated by examining the RENFWM spectra as a function of time delay between two beams.An enhancement of the ratio between the resonant and nonresonant REN-FWM signal intensities was found as the time delay was increased when the laser had broadband linewidth.展开更多
We report a Rayleigh-enhanced nondegenerate four-wave mixing(NFWM)in carbon disulfide.From the Rayleigh-enhanced NFWM spectrum a relaxation time of as short as 220fs was deduced.
We report,for the first time an experiment of the tiine-deltiyed Ra.nia.n-enhanced nondegenerate four-wave-mixing(RENFWM)with incoherence light in carbon disulfide.We studied the RENFWM signal intensity as a/unction o...We report,for the first time an experiment of the tiine-deltiyed Ra.nia.n-enhanced nondegenerate four-wave-mixing(RENFWM)with incoherence light in carbon disulfide.We studied the RENFWM signal intensity as a/unction of the relative time delay r between two beams which originate from a single broadband laser source.Our results indicate that the temportil behavior of the BENFWM is asymmetric with the mux-imiim of the signal shifted from r=0.From our experimental results the relaxation time of the Kanian mode ca.ii be extracted directly.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19874080。
文摘We apply two-photon resonant nondegenerate four-wave mixing with a resonant intermediate state for the obser- vation of Rydberg states in sodium vapour. The broadening and shift of the sodium 3S- 11D transition perturbed by argon are investigated. This technique can achieve Doppler-free resolution of narrow spectral structures of Rydberg levels if lasers with narrow bandwidths are employed.
基金Supported by the National Natural Science Foundation of China under Grant Nos.19874080 and 69578030.
文摘We demonstrated a phase-sensitive method for studying the Raman-enhanced nondegenerate four-wave mixing(RENFWM).The reference beam is another four-wave mixing signal,which propagates along the same optical path as the RENFWM signal.This method is used for studying the phase dispersion of the third-ordersusceptibility X^((3))and for the optical heterodyne detection of the RENFWM signal.
基金Supported by the National Natural Science Foundation of China under Grant No.19474067the Climbing Program from the Chinese Commission of Science and Technology.
文摘The effects of field correlation on Raman-enhanced nondegenerate four-wave mixing(REN-FWM)have been investigated by examining the RENFWM spectra as a function of time delay between two beams.An enhancement of the ratio between the resonant and nonresonant REN-FWM signal intensities was found as the time delay was increased when the laser had broadband linewidth.
基金Supported by the National Natural Sciences Foundation of China,and the Climbing Program from the Chinese Commission of Science and Technology。
文摘We report a Rayleigh-enhanced nondegenerate four-wave mixing(NFWM)in carbon disulfide.From the Rayleigh-enhanced NFWM spectrum a relaxation time of as short as 220fs was deduced.
基金Supported by tlie National Natural Science Foundation of Chinathe Chinese Academy of Sciences.
文摘We report,for the first time an experiment of the tiine-deltiyed Ra.nia.n-enhanced nondegenerate four-wave-mixing(RENFWM)with incoherence light in carbon disulfide.We studied the RENFWM signal intensity as a/unction of the relative time delay r between two beams which originate from a single broadband laser source.Our results indicate that the temportil behavior of the BENFWM is asymmetric with the mux-imiim of the signal shifted from r=0.From our experimental results the relaxation time of the Kanian mode ca.ii be extracted directly.
