Stimulated Raman gain scattering in thin planar dielectric waveguides.
نویسندگان
چکیده
The stimulated Raman gain effect in planar dielectric waveguides is analyzed for the study of thin layers. Calculations show high gain factors and predict the possibility of detecting monolayers. Compared with those for methods based on ref lection, the gain can be 4 orders of magnitude higher for a monolayer of benzene. It is concluded that waveguide stimulated Raman gain spectroscopy is a promising technique for the study of thin layers. 1995 Optical Society of America
منابع مشابه
Stimulated Raman gain scattering in thin planar dielectric waveguides: erratum.
In our recent Letter 1 a numerical error was introduced in the calculation of the gain G 0. The values of the gain G 0 given in Figs. 2 and 3 should be multiplied by a factor of 5 to yield the correct values. Since this results in a gain that is even larger than that given in the Letter, it by no means alters the discussed ideas and conclusions.
متن کاملStimulated Raman gain scattering in planar dielectric waveguides.
We have measured the vibrational Raman spectrum of a 1.2-microm-thick polystyrene film by using this film as an optical waveguide in a waveguide-stimulated Raman gain experiment. A gain factor of 1.3% was measured for the strong benzene mode at 1002 cm(-1). This value is in reasonable agreement with theoretical predictions.
متن کاملCoherent anti-Stokes Raman scattering in thin-film dielectric waveguides.
We analyze coherent anti-Stokes Raman scattering in thin-film dielectric waveguides. Extraordinarily large signal levels are predicted, and two applications of this phenomenon are discussed.
متن کاملA full vectorial model for pulse propagation in emerging waveguides with subwavelength structures part II: Stimulated Raman Scattering.
The significance of full vectorial pulse propagation through emerging waveguides has not been investigated. Here we report the development of a generalised vectorial model of nonlinear pulse propagation due to the effects of Stimulated Raman Scattering (SRS) in optical waveguides. Unlike standard models, this model does not use the weak guidance approximation, and thus accurately models the mod...
متن کاملWaveguide CARS Spectroscopy: A New Method for Background Suppression, Using Dielectric Layers as a Model
i Waveguide Coherent Anti-Stokes Raman Spectroscopy (CARS) can be used to measure Raman-active vibrations in thin-layer dielectric waveguides. In waveguide CARS experiments, background-free spectra can be obtained when asymmetric mode combinations are applied. The degree of suppression depends on the waveguide parameters and the wavelengths used. A new method using scanning pump and Stokes beam...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Optics letters
دوره 20 21 شماره
صفحات -
تاریخ انتشار 1995