An approach that employs the aperture in front of the Raman crystal for the generation of high-order stimulated Raman scattering (SRS) was proposed. Furthermore, first- to fifth-order anti-Stokes components (508, 486, 465, 447, and 430 nm) and first- to fifth-order Stokes components (559, 588, 621, 658, and 700 nm) were generated by a potassium gadolinium tungstate (KGW) Raman generator, which were the highest-order SRS generated in KGW. The effect of the aperture was discussed, and the angular dependence of Stokes was calculated theoretically and experimentally.
The classic Raman coupled equations, which describe the principles of the interaction between the incident and generated laser, have important applications in numerous domains. However, the classic Raman equations ignored the off-axis generated laser energy, which cannot be ignored in certain circumstances. We improved the classic equations by considering the off-axis laser energy of the stimulated Raman scattering. A single-pass multiwavelength potassium gadolinium tungstate crystal Raman generator pumped by a picosecond Nd:YAG laser was realized. On the basis of theoretical calculation and experimental verification, the improved equations produced numerical results for the output spectrum and output laser conversion efficiency that have a better agreement with the experimental results than the classic equations.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.