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  • 1
    Electronic Resource
    Electronic Resource
    Second harmonic generation of the output of an AlGaAs diode oscillator amplifier system in critically phase matched LiB3O5 and β-BaB2O4 (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 71 (1997), S. 315-317 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Blue 403 nm laser light is generated by frequency doubling the radiation of an AlGaAs diode laser oscillator amplifier system in critically phase matched LiB3O5 (LBO) and β-BaB2O4 (BBO) crystals. The laser system emits 400 mW of single frequency 806 nm radiation in an almost diffraction limited beam. For optimum doubling efficiency the laser radiation is enhanced by a resonant external ring cavity. The nonlinear crystal is placed at a resonator internal focus. Using a 16-mm-long LBO crystal a diode laser power of 387 mW generated 98 mW of second harmonic radiation, corresponding to a conversion efficiency of 25%. The same power was obtained in a 12- mm-long BBO crystal with a laser power of 417 mW. The measured conversion efficiencies are in good agreement with the values calculated for critically phase matched conversion in these nonlinear materials. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.119559
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  • 2
    Electronic Resource
    Electronic Resource
    Dye laser pumped, continuous-wave KTP optical parametric oscillators (1998)
    Springer
    Applied physics 66 (1998), S. 727-732 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 42.65.Yj; 42.60.By; 42.55.Mv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: 4 (KTP) optical parametric oscillators (OPOs) with pump and idler resonant cavities. With a linear two-mirror cavity the pump power at threshold was 70 mW. The single-frequency signal and idler output wavelengths were tuned in the range of 1025 to 1040 nm and 1250 to 1380 nm by tuning the dye laser in the range of 565 to 588 nm. With a dual three-mirror cavity the threshold was 135 mW. Pumped by 500 mW of 578 nm radiation the 1040 nm single-frequency signal wave output power was 84 mW. Power and frequency stable operation with a spectral bandwidth of less than 9 MHz was obtained by piezo-electrically locking the length of the pump resonant cavity to the dye laser wavelength. Similar performance was achieved by placing the idler resonant OPO inside the resonator of the dye laser. With this system power stable and single-frequency operation was achieved with a spectral bandwidth of less than 11 MHz for the idler wave.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050459
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  • 3
    Electronic Resource
    Electronic Resource
    Morphological correlates of urinary enzyme loss after extracorporeal lithotripsy (1997)
    Springer
    Urological research 25 (1997), S. 257-262 
    Details
    ISSN: 1434-0879
    Keywords: Extracorporeal lithotripsy ; Tubular lesions ; Tubular marker enzyme
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Urinary loss of the tubular marker enzyme N-acetyl-β-d-glucosaminidase (NAG) immediately following extracorporeal lithotripsy suggests corresponding morphological changes in the kidney. To date, the morphological correlate of the enzymuria remains unclear. In this animal study with Wistar rats acute morphological changes in the tubulus cells beneath isolated tubulus necrosis were demonstrated. The mechanically induced lesions of the cell organelles included fragmentation of the lysosomes and severe alterations of the cell membrane. The tubulus damage was quantified. With the help of histochemical NAG straining and electron microscopic observations, a significant correlation between number and intensity of shock waves and tubular damage was found. The intracellular lesions described here are at least part of the morphological basis of shock-wave-induced enzymuria. The results show that enzymatic changes in urine reflect visible renal damage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00942095
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  • 4
    Electronic Resource
    Electronic Resource
    Notiz über das Verhalten des Dibenzoylbernsteinsäureesters beim Erhitzen (1894)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 27 (1894), S. 1167-1168 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.189402701234
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