Introduction and Objectives: Virtual Basket TM , Bubble Blast TM , and Vapor Tunnel TM are three laser pulse modulation technologies that modify the holmium: yttrium-aluminum-garnet (Ho:YAG) laser pulse transmission through the creation of bubbles emerging from the fiber tip with different effects on the target stone. The primary outcome of the current study was to test the stone ablation rates for the different pulse modulation modes, Virtual Basket, Bubble Blast, and Vapor Tunnel, using different power, energy, and frequency settings. Materials and Methods: Quanta Cyber: Ho 150 W TM , a 365 µm Precision TM fiber, and hard and soft phantom BegoStones TM were used in an in vitro experimental configuration in a saline bath. In the Virtual Basket mode, the combinations of power, energy and frequency were tested; 10 W = 0.5

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