Lasing obtained in __________ when 191 mW of pump light at a wavelengt – McqOptions

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1.	Lasing obtained in __________ when 191 mW of pump light at a wavelength of 0.477 ‚âà√≠¬¨‚à´m is launched into laser.$
A.	Ternary PbSnSeTe alloy laser
B.	Quaternary PbSnSeTe alloy laser
C.	Doped Fluoro-zirconate fiber
D.	Ternary PbEuTe alloy laser
Answer» D. Ternary PbEuTe alloy laser

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