Search

Your search keyword '"Szabo, Alex"' showing total 26 results
Start Over Author "Szabo, Alex"
26 results on '"Szabo, Alex"'

13. Coherence effects on ultra-narrow hole burning in solids

Author

Szabo, Alex

Abstract

18th International Quantum Electronics Conference (IQEC'92), June 14-19, 1992, Vienna, Austria, Series: Technical digest series (Optical Society of America) (Conference ed.); no. 9

Published
1992

14. Dark state in ruby: Analysis of the feasibility

Author

Shakhmuratov, Rustem, Szabo, Alex, Kozyreff, Gregory, Coussement, Romain, Odeurs, Jos, Mandel, Paul, Shakhmuratov, Rustem, Szabo, Alex, Kozyreff, Gregory, Coussement, Romain, Odeurs, Jos, and Mandel, Paul

Abstract

Bichromatic excitation of the [Formula Presented] line in ruby at liquid-helium temperature is considered. The frequency difference of the spectral components of the driving field is resonant with the energy gap between the anticrossed spin sublevels [Formula Presented] and [Formula Presented] in the ground state [Formula Presented] The condition of the spin coherence trapping in the nonabsorbing state is analyzed. Population trapping is revealed in the reduced spontaneous emission from the excited state and in large spin magnetization of the ground state [Formula Presented] precessing with the frequency difference of the spectral components of the driving field. This magnetization can be detected by a pickup coil. The lifetime of the induced magnetization is strongly dependent on the ratio of the lifetime of the excited state [Formula Presented] and the spin coherence decay time [Formula Presented] © 2000 The American Physical Society., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2000

15. Population trapping in ruby

Author

Shakhmuratov, Rustem, Szabo, Alex, Kozyreff, Gregory, Coussement, Romain, Odeurs, Jos, Mandel, Paul, Shakhmuratov, Rustem, Szabo, Alex, Kozyreff, Gregory, Coussement, Romain, Odeurs, Jos, and Mandel, Paul

Abstract

SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2000

23. Probing hyperfine interactions in 53Cr(III) doped Al2O3 by spectral hole-burning in low magnetic fields.

Author

Riesen, Hans and Szabo, Alex

Subjects
ALUMINUM oxide, HYPERFINE interactions, OPTICAL hole burning, DOPED semiconductors, CHROMIUM ions, MAGNETIC fields, EXCITED state chemistry
Abstract

Abstract: We report transient spectral hole-burning experiments conducted in the line of 53-chromium(III) doped Al2O3 in zero field and low magnetic fields at 3 K. These facile experiments enable, in principle, the simultaneous determination of the hyperfine coupling parameters for both the ground state and the excited state, and in both directions to the crystal caxis. In order to determine these parameters we have applied a global fit by simulated spectra to the experimental data and good agreement between calculated and measured hole-burning patterns is achieved. The relevant resulting parameters for the excited state are MHz and  MHz. [Copyright &y& Elsevier]

Published
2010
Full Text
View/download PDF

24. The Technology Curve Revisited

Author

Szabo, Alex and Szabo, Barbara

Abstract

Two connected Atari ST computers were used to play 6882 games between copies of TechMate set at different time rates. The resulting data, combined with similar data using Belle (Thompson, 1982; Condon and Thompson, 1983), is modelled to establish a Technology Curve. It is empirically shown that the advantage of improved technology rapidly decreases when machines (and algorithms) become more powerful.

Published
1988
Full Text
View/download PDF

25. High resolution time and frequency domain spectroscopy of solid state laser materials

Author

Szabo, Alex

Subjects
Physics::Optics, tunable lasers, dye lasers, ruby lasers, laser applications, defects
Abstract

Frequency and time domain techniques of homogeneous laser spectroscopy of ions in solids are reviewed. Applications in three areas of current interest in our lab are described. These are: resonant energy transfer in ruby, strain characterization of crystals and the possible application of optical hole burning of inhomogeneously broadened lines in solids to a high capacity optical memory., Lasers '80, the International Conference, December 15-19, 1980, New Orleans, LA, USA

Published
1981

26. SELF-Q-SWITCHING OF RUBY LASERS AT 77 DEGREES K

Author

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) RADIO AND ELECTRICAL ENGINEERING DIV, Szabo,Alex, Erickson,Lyndon E., NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) RADIO AND ELECTRICAL ENGINEERING DIV, Szabo,Alex, and Erickson,Lyndon E.

Abstract

Self-Q-switching of a ruby laser rod at 77 degrees K is reported. Detailed studies indicate that the basic mechanism involved is a saturable-absorber process achieved by shielding a particular part of the rod from the pump. An essential feature is that a non-uniform cavity photon density is required to achieve saturable-absorber Q-switching by unpumped laser atoms. Measurement of the pulse growth from noise and other pulse parameters is in reasonably good agreement with the saturable-absorber giant-pulse theory. (Author), Revision of report dated 8 Apr 68.

Published
1968

Catalog

Books, media, physical & digital resources
See catalog results