Abstract
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.
Highlights
Diode-end-pumped passively mode-locked all-solid-state lasers with semiconductor saturable absorber mirrors (SESAMs) [1,2] have been extensively studied due to their short pulse duration, compactness, low insertion loss, flexibility, inexpensive, reliable operation, and wide bandgap ranging from visible to infrared etc
We develop a linear three-element resonator to make a comparative study between the conventional crystal (Nd:GdVO4) and the composite crystal (GdVO4/Nd:GdVO4) in the passively mode-locked performance
A comparative study between the conventional and diffusion-bonded Nd:GdVO4 crystals in the passively mode-locked operation has been performed by designing a reliable linear three-element cavity
Summary
Diode-end-pumped passively mode-locked all-solid-state lasers with semiconductor saturable absorber mirrors (SESAMs) [1,2] have been extensively studied due to their short pulse duration, compactness, low insertion loss, flexibility, inexpensive, reliable operation, and wide bandgap ranging from visible to infrared etc. High-power mode-locked lasers are desirable because they are useful for numerous applications such as laser-video display, medicine, material processing, nonlinear wavelength conversion and so on [3]. Several high-power passively mode-locked lasers have been proposed [4,5,6], thermal effects of the gain media are still the main challenge [7]. There is no systematic comparison between the conventional and composite crystals in the passively mode-locked performance
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