Development of a cavity enhanced Thomson and Raman scattering diagnostic
2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All right reserved. We report on the advancement of the Cavity Enhanced Thomson Scattering (CETS) diagnostic relative to previous work. Incorporation of a secondary means to provide fast feedback for cavity locking has resulted in significant improvements over the previous system. The improved lock has resulted in an intra-cavity power of 7 W generated from an incident power of 5 mW, which corresponds to a power build-up factor of 1400. We present data on the measurement of Rayleigh scattering in laboratory air and rotational Raman scattering in nitrogen.