Why Ultra-Narrow Linewidth Matters: The Physics Behind Coherence and Spectral Purity
In the world of lasers, we often focus on metrics like power and wavelength. But for high-precision applications, a far more subtle and critical characteristic emerges: linewidth. When a laser boasts an "ultra-narrow" linewidth, it's not just a minor technical improvement—it's a fundamental leap in performance that unlocks entirely new capabilities.
But what exactly is linewidth,...
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