A variable-airgap 1.3 μm C3 semiconductor laser with the gap width set for optimum mode-suppression ratio (5000:1) has been used to achieve a measured linewidth of only 1 MHz at 3 mW power output and 250 kHz at 10 mW.
No takes yet. Share an insight, caveat, or question.
Lee et al. (1985) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: