Doppler-Free Two-Photon Polarization-Spectroscopic Measurement of the 
Stark-Broadened Profile of the Hydrogen Lα Line in a Dense Plasma

Danzmann, Karsten; Grützmacher, K.; Wende, B.

doi:10.1103/PhysRevLett.57.2151

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Doppler-Free Two-Photon Polarization-Spectroscopic Measurement of the Stark-Broadened Profile of the Hydrogen Lα Line in a Dense Plasma

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Danzmann, Karsten
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Citation

Danzmann, K., Grützmacher, K., & Wende, B. (1986). Doppler-Free Two-Photon Polarization-Spectroscopic Measurement of the Stark-Broadened Profile of the Hydrogen Lα Line in a Dense Plasma. Physical Review Letters, 57(17), 2151-2153. doi:10.1103/PhysRevLett.57.2151.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-5DCE-7

Abstract

It is demonstrated that Doppler-free two-photon polarization spectroscopy makes possible Stark profile measurements without Doppler-broadened background under high-density and high-temperature conditions, e.g., in dense arc plasmas, where other sub-Doppler laser-spectroscopic techniques introduced so far fail. This method, based on the polarization rotation connected with a two-photon transition, is not limited by collisions changing the velocity or the excitation of the atoms or by photoionization of the upper level.