title: Measurement of photon echoes in ErY(2)SiO(5) at 1.5 microm with a diode laser and an amplifier.
abstract: We have measured the optical dephasing time of Er(3+) transitions near 1.5 microm in the two crystallographically inequivalent sites of Y(2)SiO(5), using an external-cavity diode laser amplified by an erbium-doped fiber amplifier. Two-pulse photon echoes were observed at zero field and in magnetic fields up to 55kG, with dephasing times as long as 580 micros (corresponding to a linewidth of 550 Hz). Stimulated echoes were also measured and showed evidence of spectral diffusion during the 13-ms lifetime of the (4)I(13/2) level.
authors.forename: R M
authors.initials: RM
authors.lastname: Macfarlane
authors.forename: T L
authors.initials: TL
authors.lastname: Harris
authors.forename: Y
authors.initials: Y
authors.lastname: Sun
authors.forename: R L
authors.initials: RL
authors.lastname: Cone
authors.forename: R W
authors.initials: RW
authors.lastname: Equall