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Opt Express. 2010 Apr 26;18(9):9518-24. doi: 10.1364/OE.18.009518.

Comparative study between conventional and diffusion-bonded Nd-doped vanadate crystals in the passively mode-locked operation.

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  • 1Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan.


We design a reliable linear three-element cavity to make a comparative study between the conventional and diffusion-bonded Nd:GdVO(4) crystals in the passively mode-locked operation. Experimental investigations reveal that the mode-locked pulse width obtained with the diffusion-bonded crystal is considerably broader than that obtained with the conventional crystal, even though the diffusion-bonded crystal can significantly reduce the thermal effects. The pulse broadening is experimentally verified to come from the length of the undoped part that brings in a reduction of the spatial-hole-burning (SHB) effect.

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