摘要
我们把共振简并四波混频(DFWM)光谱技术用于Br_2 B^3П_(0(?))^+←X^1Σ_(?)^+光谱。Br_2的汽压为70mTorr,脉冲激光能量60微焦耳,共振简并四波混频光谱线宽0.03cm^(-1)。
Resonant degenerat four-wave mixing (DFWM) spectroscopic technique has been used inthe Br_2 B^3∏_(0μ)^+←X^1∑_g^+ transition for the first time. The vapor pressure of Br_2 was 30mTorr. Pulsed dye laser energy was-60 μJ, and laser linewidth was 0.04cm^(1). Spectral linewidth (FWHM) ofthe Br_2 B^3∏_(0μ)^+←X^1∑_g^+ transition at 5400(?) was about 0.03cm^(-1).
