ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

1

Electronic Resource

Photoionization detection of stimulated Raman scattering on electron transitions of Na in an atomic beam (1983)

Beterov, I. M. ; Chebotayev, V. P. ; Fateyev, N. V.

Springer

Applied physics 31 (1983), S. 135-137

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ISSN: 1432-0649

Keywords: 32 ; 42.65

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Stimulated Raman scattering has been experimentally studied by using the process of two-step ionization of a Na atomic beam. A dip that is due to a resonance at a combination frequency corresponding to the forbidden 3S–4S transition of a Na atom was observed in the signal of nonresonant photoionization when two laser frequencies λ1=284.5 nm and λ2=1.06 μm were overlapped.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00702609

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2

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A discussion of the problem of determining multiple lifetimes from picosecond absorption recovery data as encountered in two carbocyanine dyes (1983)

Sundström, V. ; Gillbro, T.

Springer

Applied physics 31 (1983), S. 235-247

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ISSN: 1432-0649

Keywords: 42.60 ; 42.65 ; 61.60

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Absorption recovery kinetics data on the picosecond time-scale of a high signalto-noise ratio can be obtained by using continuously operating synchronously modelocked dye lasers. We show that such data make it possible to determine multiple exponential decays with small differences in rate constants. We also show that an absolute prerequisite to accomplish this is that the measurements are performed at a number of different wavelengths, and that the decays are monitored in a time interval corresponding to several lifetimes. These considerations are demonstrated by measurements on two carbocyanine dyes, DQOCI and pinacyanol, respectively.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00690794

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3

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Dressed-atom approach for probe spectroscopy in Doppler-broadened three-level systems with standing-wave saturator (1983)

Roso, L. ; Corbalán, R. ; Orriols, G. ; [et al.]

Springer

Applied physics 31 (1983), S. 115-129

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ISSN: 1432-0649

Keywords: 42.50 ; 42.65 ; 33

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The three-level probe spectroscopy of Doppler-broadened transitions in the presence of a standing wave pump laser is investigated through a diagrammatic method. A probe-response diagram is defined where the resonance positions versus the probe laser frequency and absorber velocity are plotted. The dressed atom description provides a convenient method for deriving the probe response diagram and calculating the position of the Doppler-free structures on the absorption spectrum, including the ac Stark shifts. We have interpreted probe spectra on the basis of the probe response diagram, presenting new features and giving a detailed physical interpretation of all the coherent effects appearing in the spectra. Population effects are not included in the dressed system analysis and are calculated on the basis of a semiclassical treatment, but the probe response diagram provides a complete interpretation of the involved phenomena.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00702607

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4

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Multistep ionization of CS2 vapour (1983)

Bieniak, B. ; Ernst, K.

Springer

Applied physics 31 (1983), S. 153-155

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ISSN: 1432-0649

Keywords: 33 ; 42.65

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract We report on the multistep ionization process observed in CS2 vapour irradiated by 337 nm nitrogen laser light. We propose and discuss a model in which optical as well as collisional excitation are involved in the ionization process.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00688836

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5

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Resonant upconversion of λ=1.06 μm radiation in rubidium vapors (1983)

Kiyashko, V. A. ; Popov, A. K. ; Timofeev, V. P. ; [et al.]

Springer

Applied physics 30 (1983), S. 157-159

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ISSN: 1432-0649

Keywords: 42.65 ; 42.80

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The experimental results on upconversion of λ=1.06 μm radiation to the near ultraviolet in rubidium vapors providing 12% photon efficiency are reported under twophoton resonance of the concerted and pump sum frequency.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00695472

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6

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Amplified phase-conjugate reflection of λ=10.51 μm radiation in gaseous SF6 (1983)

Bolotskikh, L. T. ; Popov, A. K.

Springer

Applied physics 31 (1983), S. 191-192

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ISSN: 1432-0649

Keywords: 42.65

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Phase-conjugate reflection at theP(12) CO2 line (λ=10.51 μm) has been obtained in gaseous SF6 with a power reflection, coefficient of 220% and an energy reflection coefficient of 115%.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00688842

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7

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A broadband Schottky point contact mixer for visible laser light and microwave harmonics (1983)

Daniel, H. U. ; Maurer, B. ; Steiner, M.

Springer

Applied physics 30 (1983), S. 189-193

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ISSN: 1432-0649

Keywords: 06.30 ; 42.65 ; 73.30

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Frequency differences of up to 900 GHz between two laser lines near 568 nm were measured by mixing laser light and harmonics of 90 GHz microwave radiation. The Schottky point contact diodes used consisted of tungsten tips onn-GaAs bases with different degrees of doping. The formation of the contacts and the sensitivity and frequency limitations of the device are discussed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00688405

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8

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Effective upconversion of CO2-laser radiation in sodium vapors (1983)

Makarov, N. P. ; Popov, A. K. ; Timofeev, V. P.

Springer

Applied physics 30 (1983), S. 53-55

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ISSN: 1432-0649

Keywords: 42.65 ; 42.80

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The effective upconversion of CO2-laser radiation to the uv spectral range has been obtained in sodium vapors, the photon efficiency being 65%, the corresponding power efficiency being 2640%.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00692659

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9

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Repetitive passive Q-switching and bistability in lasers with saturable absorbers (1983)

Arimondo, E. ; Casagrande, F. ; Lugiato, L. A. ; [et al.]

Springer

Applied physics 30 (1983), S. 57-77

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ISSN: 1432-0649

Keywords: 42.55 ; 42.65

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract We report detailed experimental data on the passive Q-switching operation in a CO2 laser with CH3I saturable absorber, and on the transient behaviour in the near-Q-switching situation. Under suitable operating conditions, we found bistability in the output power. In some cases, we observed the simultaneous presence of bistability and passive Q-switching. The theoretical part of the paper starts from the four-level model of laser with saturable absorber, as formulated by other authors. By adiabatically eliminating the variables of the resonant levels, we reduce the problem to a set of three differential equations, from which we derive explicit analytical conditions for the rise of passive Q-switching. These conditions turn out to be in good qualitative and partially quantitative agreement with our experimental findings as well as with other experimental data previously obtained by other authors. Finally we classify the possible combinations of passive Q-switching and bistability that one can find in this type of experiments.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00688479

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10

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Application of LiF crystals with F 2 − colour centers (1983)

Chebotayev, V. P. ; Marennikov, S. I. ; Smirnov, V. A.

Springer

Applied physics 31 (1983), S. 193-199

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ISSN: 1432-0649

Keywords: 42.60 ; 42.65

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract It is shown that LiF crystals with F 2 − colour centers may be used in lasers for cavity Q-switching and in high-power Nd: glass laser systems for, increasing the contrast and the self-excitation threshold. Also Lif crystals with F 2 − centers are successfully used for the generation of ultrashort pulses, for the generation of difference frequencies in the ir spectral range and in intracavity spectroscopy experiments.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00688843

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