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Question 2#

Of the following lasers, which is matched with the correct wavelengh?

a. CO2 and 2940nm
b. Erbium-YAG and 10,600nm
c. Alexandrite and 755nm
d. KTP and 1064nm
e. Nd:YAG and 532nm

Correct Answer is C

Comment:

Alexandrite and 755nm. CO2 is 10,600, ER:YAG is an erbium yttrium aluminium garnet laser at 2940, KTP is potassium titanyl phosphate and is the frequency doubling crystal for Nd:YAG (neodynium YAG), hence halving the Nd:YAG wavelength of 1064 to 532.