50
1 Resonance Methods for Increasing Sensitivity of Interferometry …
The present studies allowed increasing sensitivity of measurements by the method
of resonance interferometry in comparison with the results of similar interference
measurements made by other authors. As a probing source, they used stimulated
Raman scattering of ruby laser radiation in nitrobenzene under the mismatch value
of λ ~ 0,7 nm. Minimally detectable sodium atoms concentration in arc plasma
was ~10
13 cm
−3 with the layer thickness of 5 mm.
3. For the first time in the result of the studies on resonance fluorescence, the
character was established of spatial and temporal hydrogen atoms distribution and
metal impurity atoms in high-temperature plasma of tokamak. The main result of
these experiments on tokamak FT-1 tokamak was practical mastering of the range
of measuring concentrations of 10
9 –10
8 hydrogen atoms by line H a . To broaden
spectral range of the fluorescence method for the first time coherent radiation on
the hydrogen wavelength L a (121.6 nm) was produced. Taking into consideration
the influence of buffer gas, the optimal conditions of the generation process of
the third harmonic in gaseous mixtures (the mixture of krypton and argon) were
found. It made it possible to achieve conversion efficiency of 10
−4 and to get
coherent radiation in the range of vacuum ultraviolet radiation (121.6 nm) on
the level of kilowatt power enough for resonance fluorescence excitation in the
vacuum spectrum range.
The collaboration of several research teams assisted to the effectiveness of all
this quite complicated experimental work. Among them are on the part of Russia—
plasma optics departments (A. N. Zaidel, Yu. I. Ostrovsky, G. V. Ostrovskaya, V. I.
Gladuschak, E. J. Shreider), plasma physics laboratories of the Physics and Technology Institute named after A. E. Ioffe of the Russian Academy of Sciences (G. T.
Razdobarin, V. V. Semenov, L. V. Sokolova, I. P. Folomkin), holography laboratories (V. G. Sidorovich, D. I. Staselko) of the State Optical Institute named after S.
I. Vavilov (Leningrad); on the part of Belarus—laser plasma diagnostics laboratories (V. S. Burakov, N. V. Tarasenko, P. A. Naumenkov, P. J. Misakov and others),
generating organic compounds laboratories (A. N. Rubinov, V. S. Motkin, M. M.
Lojko and others), laser systems and devices laboratories (V. A. Mostovnikov, S. A.
Batische and others) and Optical Holography Laboratories (A. S. Rubanov) of the
Institute of Physics of the Academy of Sciences of the BSSR (Minsk). A great role in
the organization of the cooperation of these research teams from Russia and Belarus
in order to carry out joint science studies was played by L. V. Tanin.
The studies on dynamic resonance holography [30–35], resonance interferometry
[27–29], resonance fluorescence [13–15] using dye lasers [12, 36, 39, 78, 79] carried
out for the first time with the active participation of the author of this book were
successfully continued by his followers [105–112].
The results of these studies were used in the works of other authors and coauthors in the studies of potassium, cesium, lithium and hydrogen plasma. These
results are also used in PIAS named after P. V. Lebedev RAS (Moscow), the Physics
and Technology Institute named after A. E. Ioffe of Russian Academy of Sciences
(St. Petersburg), the Institute of Physics of the NAS of Belarus and so on.
1 Resonance Methods for Increasing Sensitivity of Interferometry …
The present studies allowed increasing sensitivity of measurements by the method
of resonance interferometry in comparison with the results of similar interference
measurements made by other authors. As a probing source, they used stimulated
Raman scattering of ruby laser radiation in nitrobenzene under the mismatch value
of λ ~ 0,7 nm. Minimally detectable sodium atoms concentration in arc plasma
was ~10
13 cm
−3 with the layer thickness of 5 mm.
3. For the first time in the result of the studies on resonance fluorescence, the
character was established of spatial and temporal hydrogen atoms distribution and
metal impurity atoms in high-temperature plasma of tokamak. The main result of
these experiments on tokamak FT-1 tokamak was practical mastering of the range
of measuring concentrations of 10
9 –10
8 hydrogen atoms by line H a . To broaden
spectral range of the fluorescence method for the first time coherent radiation on
the hydrogen wavelength L a (121.6 nm) was produced. Taking into consideration
the influence of buffer gas, the optimal conditions of the generation process of
the third harmonic in gaseous mixtures (the mixture of krypton and argon) were
found. It made it possible to achieve conversion efficiency of 10
−4 and to get
coherent radiation in the range of vacuum ultraviolet radiation (121.6 nm) on
the level of kilowatt power enough for resonance fluorescence excitation in the
vacuum spectrum range.
The collaboration of several research teams assisted to the effectiveness of all
this quite complicated experimental work. Among them are on the part of Russia—
plasma optics departments (A. N. Zaidel, Yu. I. Ostrovsky, G. V. Ostrovskaya, V. I.
Gladuschak, E. J. Shreider), plasma physics laboratories of the Physics and Technology Institute named after A. E. Ioffe of the Russian Academy of Sciences (G. T.
Razdobarin, V. V. Semenov, L. V. Sokolova, I. P. Folomkin), holography laboratories (V. G. Sidorovich, D. I. Staselko) of the State Optical Institute named after S.
I. Vavilov (Leningrad); on the part of Belarus—laser plasma diagnostics laboratories (V. S. Burakov, N. V. Tarasenko, P. A. Naumenkov, P. J. Misakov and others),
generating organic compounds laboratories (A. N. Rubinov, V. S. Motkin, M. M.
Lojko and others), laser systems and devices laboratories (V. A. Mostovnikov, S. A.
Batische and others) and Optical Holography Laboratories (A. S. Rubanov) of the
Institute of Physics of the Academy of Sciences of the BSSR (Minsk). A great role in
the organization of the cooperation of these research teams from Russia and Belarus
in order to carry out joint science studies was played by L. V. Tanin.
The studies on dynamic resonance holography [30–35], resonance interferometry
[27–29], resonance fluorescence [13–15] using dye lasers [12, 36, 39, 78, 79] carried
out for the first time with the active participation of the author of this book were
successfully continued by his followers [105–112].
The results of these studies were used in the works of other authors and coauthors in the studies of potassium, cesium, lithium and hydrogen plasma. These
results are also used in PIAS named after P. V. Lebedev RAS (Moscow), the Physics
and Technology Institute named after A. E. Ioffe of Russian Academy of Sciences
(St. Petersburg), the Institute of Physics of the NAS of Belarus and so on.