Experimental Study of the Solid State Vibrational Laser

最近的红外实验的时间依赖的振动和 晶体中CN-离子的转动响应表明， 这种双原子分子在固体中的振动动力学导致 意外的激光行为。 如果晶体中的其他双原子缺陷 性质相关的CN-那么固态振动激光器可以 适用于红外和远红外的各种应用 光谱区 一个基本的实验问题是 近红外色心激光泵浦之间缺乏一致性 以及可以掺杂到 晶体 PI发现非共振紫外激光器 辐射可以用来泵浦CN-开的振动流形 通过另一条途径， 可以研究固体中的分子。 脉冲紫外光的接口 准分子激光器转换为1000分辨率傅里叶变换红外 光谱仪将提供一种新的有效类型的时间分辨 振动光谱，可用于探索多级IR 固态分子的能量转移。 审查 复杂分子的亚秒弛豫时间的傅立叶- 变换红外光谱仪将以不同的模式使用， 时间分析皮秒脉冲之间的延迟， 非谐振子中快饱和吸收的测量

Recent IR experiments on the time dependent vibrational and rotational response of CN-ions in crystals indicate that the vibrational dynamics of this diatomic molecule in solids leads to unexpected lasing behavior. If other diatomic defects in crystals have properties related to CN- then solid state vibrational lasers could be practical for a variety of applications in the infrared and far-infrared spectral regions. One fundamental experimental problem has been the lack of coincidences between near-IR color center laser pumps and the overtone frequencies of molecules which can be doped into crystals. The discovery by the PI that nonresonant UV laser radiation can be used to pump the vibrational manifold of CN- opens up another avenue through which the IR radiative properties of molecules in solids can be studied. The interfacing of a pulsed UV excimer laser to an ultrahigh resolution fourier-transform infrared spectrometer will provide a new efficient type of time resolved vibrational spectroscopy which can be used to explore multilevel IR energy transfer of molecules in the solid state. For the examination of complex molecules with subnsecond relaxation times the fourier- transform infrared spectrometer will be used in a different mode to time analyze the delay between picosecond pulses in the measurement of fast saturable absorption in the anharmonic vibrator.