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The most commonly used laser for Raman spectroscopy is ___________

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The most commonly used laser for Raman spectroscopy is ___________

(a) ND: YAG

(b) Ruby laser

(c) He-Ne laser

(d) Semiconductor Laser

The question was asked during an internship interview.

My doubt is from Raman Effect topic in chapter Quantum Physics of Engineering Physics I

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Right choice is (c) He-Ne laser

The best I can explain: The most commonly used laser in Raman spectroscopy is He-Ne laser (632.8 nm). Lasers are used as they possess the advantages of providing high intensity of light collimated in a particular direction.

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