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What is the wavelength value of neutral gas laser used in LBM?

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in Advanced Machining by (962k points)
What is the wavelength value of neutral gas laser used in LBM?

(a) 633 nm

(b) 694 nm

(c) 856 nm

(d) 1064 nm

I had been asked this question during an interview.

Query is from Laser Beam Machining-Introduction topic in portion Thermal Processes of Advanced Machining

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Best answer
Correct option is (a) 633 nm

The explanation: The value of wave length of Neutral gas laser used in Laser beam machining is 633 nm.

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