Electro-optically Q-switched 2.94um Er:YAG laser and its applications

Abstract

Abstract:

With the extensive application of 2.94 laser in medicine, the control of laser parameters are particularly important to improve medical safety, therefore, Q-switched operation of Er:YAG laser is necessary. With LiNbO3 crystal cut at Brewster’s angle acted as electro-optical Q-switching of the Er:YAG laser, at 5Hz repetition rate and pump energy of 92J, giant pulses of 103 ~ 110ns duration and 87mJ energy were obtained. A free-running and Q-switched pulsed laser was used for the cavity preparation experiments of the dentine respectively. Using scanning electron microscopy, the samples showed that Q-switched laser is more efficient.

Key words: laser techniques, Er:YAG laser, electro-optical Q-switching, LiNbO₃ crystal, cavity preparation

CLC Number:

TN248.1

Ma Ming-jun，Ye Bing，Ma Xiao-min . Electro-optically Q-switched 2.94um Er:YAG laser and its applications[J]. J4, 2010, 27(6): 688-692.

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Electro-optically Q-switched 2.94um Er:YAG laser and its applications

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