|Author||Zagorul'ko, K. A. ♦ Kryukov, P. G. ♦ Larionov, Yu V. ♦ Rybaltovsky, A. A. ♦ Dianov, Evgenii M. ♦ Vorob'ev, Nikolai S. ♦ Smirnov, A. V. ♦ Schelev, M. Ya ♦ Prokhorov, A. M.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ AMPLIFIERS ♦ EXCIMER LASERS ♦ FABRICATION ♦ GRATINGS ♦ HARMONIC GENERATION ♦ OPTICAL FIBERS ♦ PHOTOSENSITIVITY ♦ PULSES ♦ RADIATION EFFECTS ♦ REFRACTIVE INDEX ♦ SAPPHIRE ♦ THERMODYNAMIC PROPERTIES ♦ ULTRAVIOLET RADIATION ♦ CORUNDUM ♦ ELECTROMAGNETIC RADIATION ♦ ELECTRONIC EQUIPMENT ♦ EQUIPMENT ♦ FIBERS ♦ FREQUENCY MIXING ♦ GAS LASERS ♦ LASERS ♦ MINERALS ♦ OPTICAL PROPERTIES ♦ OXIDE MINERALS ♦ PHYSICAL PROPERTIES ♦ RADIATIONS ♦ SENSITIVITY|
|Abstract||Long-period gratings are fabricated in an optical fibre for the first time by second-harmonic radiation from a femtosecond Ti:sapphire laser without the use of an amplifier. The photosensitivity of different fibres exposed to femtosecond pulses is studied. The estimates of the photosensitivity and the thermal properties of long-period gratings showed that the mechanism of the change in the refractive index induced by the 400-nm second-harmonic radiation differs from the corresponding mechanisms upon exposure to UV radiation from excimer lasers or irradiation by amplified 800-nm femtosecond pulses. (optical fibres)|
|Learning Resource Type||Article|
|Publisher Place||United States|
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