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Transmission of water under erbium laser irradiation

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2 Author(s)
Breguet, J. ; Inst. of Appl. Phys., Bern Univ., Switzerland ; Luthy, W.

Water can be used as a passive shutter for Q-switched erbium lasers. The switching mechanism induced in water under irradiation by 2.79- and 2.94-μm erbium laser light has been studied. It can be explained with a model based on evaporation. Time constants have been measured with a CW HeNe laser at 3.391 μm. The velocity of the vaporization front is about 10 m/s. This value leads to rise and fall times on the order of 10 μs in the given geometry

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Quantum Electronics, IEEE Journal of  (Volume:26 ,  Issue: 2 )