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Where is ND: YAG most commonly used?

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Where is ND: YAG most commonly used?

(a) Cosmetic Surgery

(b) Welding

(c) Photography

(d) Optical Communications

The question was posed to me during an interview.

This interesting question is from Introduction and Applications of Laser in division Laser of Engineering Physics II

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Correct answer is (a) Cosmetic Surgery

Explanation: ND: YAG is most commonly used for cosmetic energy because it has the property of maximum energy absorption by the target (hair or lesion) with minimum absorption by the surrounding skin structures.

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