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Which effect limits micromachining resolution using excimer lasers?

A)Wavelength-dependent diffraction threshold
B)Plasma-induced optical absorption
C)Thermally-induced index fluctuations
D)Stimulated Raman scattering intensity

💡 Explanation

Plasma formation absorbs the laser energy through Inverse Bremsstrahlung, rather than ablating the material cleanly, because energetic electrons collide with atoms creating a plasma cloud; therefore, resolution suffers as material melts, rather than being cleanly removed.

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