Abstract
An experimental investigation was made of the time characteristics of Q-switching pulses emitted by a cw Nd:YAG laser in which an LiF crystal containing F - 2 color centers was used as a saturable absorber. Sufficient absorption saturation was obtained using the lenses inserted into the resonator, consequently it was possible to achieve the Q-switching operation with even a low-power (1–2 W) cw YAG laser. The dependences of the pulse parameters, such as the pulse width, the pulse repetition period, and the pulse amplitude stability, on the current of a krypton-arc lamp (i.e., pump power) and the exposure of X-rays (i.e., initial absorption) were also investigated.
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