Accession Number:

ADA148211

Title:

Degenerate Four-Wave Mixing Line shapes in Sodium Vapor under Pulsed Excitation

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS

Personal Author(s):

• Shapiro, J. H.
• Kumar, P.

Report Date:

1984-01-01

Pagination or Media Count:

13.0

Abstract:

Degenerate four-wave mixing DFWM lineshapes are investigated in sodium vapor near the D2 resonance line using nearly Fourier transform limited pulses. At low pump intensities sub-Doppler resolution is obtained. When the Rabi frequency associated with the pump intensity becomes equal to the ground state hyperfine frequency separation of sodium, each component of the double- peaked DFWM spectrum further splits into two components each. Adiabatic following model explains the near-resonant intensity dependence of the DFWM signal but is insufficient to explain the whole structure.

Descriptors:

• *DYE LASERS
• *LINE SPECTRA
• *METAL VAPORS
• *RESONANCE RADIATION
• *SODIUM
• DOPPLER EFFECT
• EXCITATION
• FOURIER TRANSFORMATION
• GROUND STATE
• HYPERFINE STRUCTURE
• INTENSITY
• NEODYMIUM LASERS
• NONLINEAR SYSTEMS
• OPTICAL PUMPING
• PARTS
• PULSED LASERS
• PULSES
• PUMPS
• RESONANCE
• STRUCTURAL PROPERTIES

Subject Categories:

• Lasers and Masers
• Atomic and Molecular Physics and Spectroscopy
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE