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  • Artikel  (14)
  • Artikel: DFG Deutsche Nationallizenzen  (14)
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  • Artikel  (14)
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  • Artikel: DFG Deutsche Nationallizenzen  (14)
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  • Springer  (14)
  • American Association for the Advancement of Science
  • American Chemical Society (ACS)
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  • 2020-2024
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  • Physik  (14)
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  • 1
    Digitale Medien
    Digitale Medien
    Simple single-frequency He-Ne laser (1986)
    Springer
    Applied physics 40 (1986), S. 153-155 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.60 ; 42.55
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract For a (0.5–0.6)m long He−Ne laser tube, single longitudinal mode 632.8 nm generation is obtained, using a higher gas-mixture pressure and application of an axial magnetic field. An efficient and very simple mode selection is obtained by gas-mixture pressure increase only. A multimode power to single-mode power conversion coefficientk=0.75 is obtained by increasing the tube pressure. A further increase tok=0.85 is possible with optimum magnetic field and gas pressure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697245
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Stimulated radiation via several hybrid resonance processes in Na-K or K vapor (1986)
    Springer
    Applied physics 41 (1986), S. 125-129 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 33 ; 42.55
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract This paper reports the observation and analysis of several different opticalpumping and energy-transfer processes for generating stimulated radiation, including equal or unequal frequency two-step Na2−K and K2−K hybrid resonance. A series of infrared stimulated and cascade stimulated lines by the transitions in atomic potassium were detected.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00702664
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  • 3
    Digitale Medien
    Digitale Medien
    Characterization of the noise in continuously operating mode-locked lasers (1986)
    Springer
    Applied physics 39 (1986), S. 201-217 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.55 ; 42.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An experimental and theoretical investigation of the fluctuations of the pulses from continuous-wave mode-locked lasers is presented. It is shown that these fluctuations can be detected and quantitatively characterized from measurements of the power spectrum of the light intensity. Such power spectra can be measured with great accuracy by shining the laser output on a suitable photodetector and by processing the detector signal with the use of an electronic spectrum analyzer. Different types of noise such as fluctuations of the pulse energy, pulse repetition time, and pulse duration, can be readily recognized from their characteristic spectral signature. Experimental results of noise measurements are presented for a synchronously mode-locked dye laser pumped by an acousto-optically mode-locked argon ion laser, and also for a colliding pulse passively mode-locked dye laser.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697487
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  • 4
    Digitale Medien
    Digitale Medien
    Performance improvement of an x-ray preionized XeCl laser of very small discharge volume (1986)
    Springer
    Applied physics 41 (1986), S. 31-37 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 34.80G ; 42.55 ; 52.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Increasing the preionization electron density is found to be an effective method for improving the output performance of discharge-pumped excimer lasers at high gas pressures when the power-supply voltage becomes a limiting factor. In a small volume (2 cm3), x-ray preionized discharge, orders of magnitude improvement in XeCl laser power output (up to 400 kW) and pulse energy (up to 26 mJ) over previously reported results have been found possible using this method. Modifications to the low energy x-ray source and discharge system leading to these improvements are described. Various laser output characteristics are also presented and discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697524
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  • 5
    Digitale Medien
    Digitale Medien
    Passive mode locking of the continuous wave DCM dye laser (1986)
    Springer
    Applied physics 41 (1986), S. 53-55 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.55 ; 42.60
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The first passive mode locking of the continuous wave (cw) DCM dye laser is reported. Subpicosecond pulses as short as 0.68 ps were obtained over the spectral region from 655 to 673 nm from a simple linear cavity with no dispersion optimisation. The dye 1,3′ Diethyl 4,2′ quinolythiacarbocyanine iodide (DQTCI) was used as the saturable absorber.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697528
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  • 6
    Digitale Medien
    Digitale Medien
    New cw optically pumped FIR laser lines (1986)
    Springer
    Applied physics 41 (1986), S. 179-181 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 33 ; 42.55
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Far-infrared laser action has been demonstrated in three previously unknown laser media. The substances used were: propargyl fluoride, 15-N cyanogen fluoride, and hydroxylamine. Assignments of the molecular transitions giving rise to the observed laser lines were made for the latter two compounds. New FIR laser lines were also observed with two substances, vinyl chloride and vinyl fluoride, which were already known as laser media by pumping with isotopic CO2 and N2O laser lines. The wavelengths of a total of 26 new FIR laser lines were determined together with the threshold pump power and an indication of the relative line strengths.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00693920
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  • 7
    Digitale Medien
    Digitale Medien
    Optimization criteria for optical klystrons (1986)
    Springer
    Applied physics 41 (1986), S. 231-234 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.60 ; 42.55
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We discuss simple criteria which allow the determination of both an optimum drift strength and total length, for the optical klystron operation. The analysis of the gain reduction factors also includes the finite microbunch length. We extend the discussion to harmonic generation, where we also find an optimum for the input power.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697403
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Attachment kinetics and life time of perionization electrons in rate-gas halogen laser mixtures (1986)
    Springer
    Applied physics 40 (1986), S. 15-23 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 34.80G ; 42.55 ; 52.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Experiments on homogeneous initiation of pulsed avalanche discharges in typical XeCl laser mixtures show that the x-ray preionization pulse remains effective after a time delay of the order of 20 μs even at very high gas pressures (∼15 atm). Detailed kinetics analyses indicate that dissociative attachment of HCl is relatively slow during and after the preionization period so that the long effective delay time cannot be attributed to the storage effect of Cl− ions. Instead, the observed phenomenon can be attributed to the long survival time of the free electrons due to relatively slow diffusion and electron-ion recombination. Some problems arising from quantitative interpretation of the experimental results are also noted and discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697222
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  • 9
    Digitale Medien
    Digitale Medien
    Undamped undulation superposed on the passive Q-switching pulse of a CO2 laser (1986)
    Springer
    Applied physics 39 (1986), S. 83-90 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.55 ; 42.65
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An undamped undulation superposed on the pulse tail of the passive Q-switching is observed using HCOOH gas as a saturable absorber. The pulse shapes with the undulation are nicely reproduced through the rate-equation analysis in which the laser gain medium is described as a three-level system. Good agreements between the observation and the calculation are also obtained in the dependence of the period and the width of passive Q-switching pulse on laser parameters. The mechanism of the undulation is interpreted as the relaxation oscillation attributed to the relaxation from the lower laser level. The collisional rate constant of HCOOH molecule is also obtained.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00694802
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  • 10
    Digitale Medien
    Digitale Medien
    Shortening of travelling-wave-amplified spontaneous emission by a transversal pumping scheme (1986)
    Springer
    Applied physics 40 (1986), S. 35-38 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.55 ; 82.50
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract An experimental investigation on shortening of travelling-wave ASE employing a transversal pumping is presented. A N2 laser with λ=337.1 nm, pulsewidth: 700 ps is used as a pump source. An ASE pulse with duration of 45, 55 and 45 ps from dye solution of Rh 6G, Rh B and C311, respectively, is obtained. Pulse shapes of output signals generated from these solutions in three different pumping schemes are compared.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697225
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