Abstract
We previously described drilling of advanced materials (intermetallics, superalloys, and composites) at the Nd:YAG laser fundamental wavelength and the excimer laser ultraviolet wavelength [ICALEO’95]. We now report further studies at the second harmonic wavelength of a high peak power Nd:YAG laser. The results show that drilling at the shorter wavelength further reduced the undesired thermal effects such as recast layers and heat affected zones (HAZ). A comparison is made with the previous results at the fundamental wavelength.We previously described drilling of advanced materials (intermetallics, superalloys, and composites) at the Nd:YAG laser fundamental wavelength and the excimer laser ultraviolet wavelength [ICALEO’95]. We now report further studies at the second harmonic wavelength of a high peak power Nd:YAG laser. The results show that drilling at the shorter wavelength further reduced the undesired thermal effects such as recast layers and heat affected zones (HAZ). A comparison is made with the previous results at the fundamental wavelength.
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