Fig. 2
From: Laser drilling: reviewing the effect of purging system and formation parameters
Laser-assisted drill bit application. A Laser-assisted drill bit [16]. B 12 ft dolomite hole drilled with laser-assisted drill bit [16]. C Laser pattern and the PDC blades and cutters (https://www.nextbigfuture.com/2016/01/breakthroughs-in-high-power-fiber.html). D High-power laser drill head bit assembly (https://www.nextbigfuture.com/2016/01/breakthroughs-in-high-power-fiber.html). E Laser system for field application (https://www.nextbigfuture.com/2016/01/breakthroughs-in-high-power-fiber.html)