TITLE:
CW-Dye Laser Spectrometer for Ultrahigh Resolution Spectroscopy: Design and Performance
AUTHORS:
Hassan El-Kashef
KEYWORDS:
Dye Laser, Optical Spectroscopy, Radio Frequency Technique, Hyperfine Structure of Atoms
JOURNAL NAME:
Optics and Photonics Journal,
Vol.4 No.8,
August
28,
2014
ABSTRACT:
This work
is devoted to building-up of ultrahigh resolution cw-dye laser spectrometer
system. This system used self-frequency-stabilized and temperature-compensated
plano-confocal reference cavity. The one-way propagation is achieved using new
construction of optical diode. The laser frequency selection and tuning is
accomplished using Mach-Zehnder interferometer of free spectral range 42.5 GHz.
In combination with computerized tunable radio frequency technique, this system
is capable of a resolution of about ±1 KHz. Applications for measuring
high lying, weakly occupied metastable states of free atoms (line
548.792 nm of V-51) are investigated to a high degree of accuracy. The results
of the constants A and B of the hfs as measured by fluorescence spectroscopy
show that A = 160.762 and B = -17.918, while the
obtained results for the hfs constants A and B as measured by laser-RF double
resonance technique give A = 160.9950 and B = -17.3358.