ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Transmission electron microscopy investigation of laser-induced defects in (Al, Ga) As (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 58 (1985), S. 4089-4094 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In their luminescence appearance three different defects induced in (Al, Ga) As heterostructures through highly focused cw Kr-ion laser irradiation have been investigated by transmission electron microscopy (TEM). Two of them, a luminescent defect and a nonradiative defect are only revealed by TEM through thickness variations due to the chemical thinning process. They probably consist of point defects or point-defect complexes. A third type of defect consisting of extended dislocation networks was also occasionally found. These networks seem to originate from native defects and are very similar to formerly described dark-line defects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335538
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Fragmentation process induced by nanosecond laser pulses (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 2644-2646 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A fiber-optic stress sensing technique is applied to evaluate the fragmentation mechanism induced by nanosecond laser pulses. We demonstrate that fragmentation is achieved in response to the shock induced by the laser initiated plasma expansion. This shock is followed by a second shock of similar magnitude observed some hundreds of microseconds later, which originates from the collapse of the induced cavitation bubble. The strength of this second shock is able to induce further fragmentation of the target. This is in contrast to the fragmentation process observed with microsecond pulses where the shock induced by the cavitation bubble collapse is the governing phenomenon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.108095
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Characterization of a photorefractive phase conjugator by optical low-coherence reflectometry (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 1079-1081 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical low coherence reflectometry is applied to measure with μm precision the type, position and length of gratings inside a barium-titanate crystal producing self-pumped phase conjugation. In this particular crystal it shows the presence of an internal resonator due to reflections on faces of the crystal. Moreover, it was possible to measure the simultaneous presence of transmission and reflection gratings with conjugation efficiencies of 40% and 3%, respectively. The spectral reflectivity of the transmission grating is Gaussian-like with a full width at half-maximum=1.5 nm. The six reflection gratings, each with a length of 116±6 μm, are due to the multimode spectrum of the writing laser.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.110938
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Fragmentation process induced by microsecond laser pulses during lithotripsy (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 258-260 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A fiber optic stress sensing technique is applied to evaluate the fragmentation mechanism for pulsed dye-laser lithotripsy. We demonstrate for the first time that the fragmentation process with microsecond laser pulses originates from the shock wave induced by the cavitation bubble collapse. This shock occurs some hundreds of microseconds after the laser pulse. The shock induced by the plasma expansion, which occurs during laser irradiation, has a minor effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107961
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Compaction- and photoelastic-induced index changes in fiber Bragg gratings (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 3069-3071 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The tension on the core of single-mode fibers is strongly increased by the formation of a Bragg grating. This tension increase lowers the refractive index because of the photoelastic effect. On the other hand, the compaction of the core network results in an increased refractive index. The two contributions are evaluated from axial stress measurements, from the determined index modulation amplitude, and from the mean index change of the Bragg gratings. The total Bragg grating index modulation is smaller than the compaction-induced index modulation by 30%–35% because of the photoelastic effect. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.116425
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Hydrogen-induced reduction of axial stress in optical fiber cores (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 516-518 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Radial distributions of axial stress across B/Ge- and Sn/Ge-codoped core fibers and a Corning standard single-mode fiber were measured before and after hydrogen loading under different conditions. A significant reduction of axial stress in the core of all investigated fibers is observed after hydrogen loading. The stress reduction in the core of hydrogen-loaded fibers is irreversible and depends strongly on the core dopants and the fiber drawing tension. The hydrogen-induced core stress reduction is believed to be related to the reactions between hydrogen and drawing-induced defects in the fiber core. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123172
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    All-fiber phase modulator based on lead zirconate titanate thin-film coating (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 78 (2001), S. 2193-2195 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An all-fiber phase modulator based on lead titanate zirconate coating deposited by dc reactive magnetron sputtering was fabricated and optically characterized. The frequency response showed a flat broadband structure up to 600 kHz, with an efficiency of 0.73 rad/(V m). This is an order of magnitude higher than that for sputtered zinc oxide based phase modulators. Radial mode resonance peaks were observed between 10 and 700 MHz, with a maximum phase modulation amplitude of 0.3 rad at the fundamental radial resonance frequency of 25.6 MHz. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1364508
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Dynamics of laser crystallization in amorphous Ge films (1981)
    Springer
    Applied physics 25 (1981), S. 91-93 
    Details
    ISSN: 1432-0630
    Keywords: 68.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In situ time- and space-resolved transmission measurements have been used to investigate the crystal growth during laser irradiation of amorphous Ge films. For dwell times longer than 5 ms, microcrystallization processes comparable to conventional thermal annealing are observed, whereas for irradiation times shorter than 5 ms, shell like crystallites, 20 μm long, are obtained. The results from the pulsed measurements agree with corresponding experiments performed under cw-annealing conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901278
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Laser generated microstructures (1985)
    Springer
    Applied physics 37 (1985), S. 121-138 
    Details
    ISSN: 1432-0630
    Keywords: 81.40 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Deposition and etching processes based on the interaction of laser light with a substrate surface and molecules of the surrounding ambient are discussed in this tutorial review. This “laser writing” approach is based on photolytic, pyrolytic, or photoelectrochemical microreactions. The fundamental properties of such reactions and corresponding processing parameters (e.g. deposition or etch rate, resolution) are discussed. Important published results for deposition by photolysis, pyrolysis, and etching are summarized in the form of tables. A special list of potential applications for such techniques and a list of all materials used thus far for laser deposition and etching are included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617497
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Diode lasers coupled to external resonators (1979)
    Springer
    Applied physics 20 (1979), S. 1-18 
    Details
    ISSN: 1432-0630
    Keywords: 42.55.Px ; 42.60 Da ; 42.82.+n
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This tutorial revíew is concerned with the properties of injection lasers operated with passive optical feedback. Thep-n junction laser characteristics relevant for operation in external cavities are summarized. The properties of diode lasers coupled to different types of external resonators are reviewed as well as experiments that incorporate passive feedback in monolithic integrated optical structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901781
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...