ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
Solid state Ti:sapphire lasers were constructed and combined with nonlinear optics to produce a 100 fs resolution absorption spectrometer with tunability from 50 000 to 800 cm−1 and 〈1 m o.d./s sensitivity. Tunable light generation and array detection technology are presented, including a discussion of the suitability of different infrared nonlinear optical materials. A systematic approach to stable infrared pulse generation is provided. Critical parameters of the pump/probe beam geometry are enumerated, revealing detrimental nonlinear contributions to the observed pump-induced change in probe absorbance. These effects include pump-induced probe phase modulation and pump-induced refractive index lenses. Measurements and simulations of the unwanted features in various system geometries reveal their systematic control and elimination. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1147280
