Abstract

In several previous works about 1.5-μm laser diode frequency stabilization, the best laser frequency stabilities were limited to δv/v ≈ 10⁻¹⁰ by the lack of narrow linewidth 1.5 μm frequency references.^1-3 Although numerous molecular absorption lines are found in this wavelength region, their ≈500-MHz- wide Doppler limited absorptions were too large to obtain a laser diode frequency reference with a high stability.

© 1994 Optical Society of America