Intensity-induced mode shift in a femtosecond laser by a change in the nonlinear index of refraction |
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| Authors: | Stenger J Telle H R |
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| Institution: | Physikalisch-Technische Bundesanstalt, 38116, Braunschweig, Germany. |
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| Abstract: | The modes of the comb spectrum of a Kerr-lens mode-locked laser are frequency shifted versus the corresponding cw modes of the cavity by an intensity-induced change in the index of refraction in the Kerr medium. We demonstrate this effect and discuss novel schemes for fast frequency control of the comb spectrum. |
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