Laser stabilization

Sub-kHz lasing of a CaF$_2$ whispering gallery mode resonator stabilized fiber ring laser

We utilize a high quality calcium fluoride whispering-gallery-mode resonator to passively stabilize a simple erbium doped fiber ring laser with an emission frequency of 196THz (wavelength 1530nm) to an instantaneous linewidth below 650Hz. This …

CaF$_2$ whispering-gallery-mode-resonator stabilized-narrow-linewidth laser

A fiber laser is stabilized by introducing a calcium fluoride (CaF$_2$) whispering-gallery-mode resonator as a filtering element in a ring cavity. It is set up using a semiconductor optical amplifier as a gain medium. The resonator is critically …

Whispering-gallery-mode-resonator-stabilized narrow-linewidth fiber loop laser

We demonstrate a narrow-line fiber loop laser using erbium-doped fiber as gain material, stabilized by using a microsphere as a transmissive frequency selective element. Stable lasing with a linewidth of 170 kHz is observed, limited by the …