One-femtosecond, long-term stable remote laser synchronization over a 35-km fiber link

All fiber-coupled, long-term stable timing distribution for free-electron lasers with few-femtosecond jitter

We report recent progress made in a complete fiber-optic, high-precision, long-term stable timing distribution system for synchronization of next generation X-ray free-electron lasers. Timing jitter characterization of the master laser shows less than 170-as RMS integrated jitter for frequencies above 10 kHz, limited by the detection noise floor. Timing stabilization of a 3.5-km polarization-ma...

270-km ultralong Raman fiber laser.

We analyze the physical mechanisms limiting optical fiber resonator length and report on the longest ever laser cavity, reaching 270 km, which shows a clearly resolvable mode structure with a width of approximately 120 Hz and peak separation of approximately 380 Hz in the radio-frequency spectrum.

Long-term results of 28 esthesioneuroblastomas managed over 35 years.

BACKGROUND The purpose of our study was to assess the long-term results in the management of patients with esthesioneuroblastoma. METHODS A total of 28 patients were retrospectively reviewed to analyze their clinical features, treatment outcomes, pattern of failures, and course of the disease. RESULTS The patients were classified as 2 patients with T1, 10 patients with T2, 10 patients with ...

Ultra Stable Coherent Sources Based on Injection Locked Dfb from a Femtosecond Fiber Laser Comb

− We propose ultra stable coherent laser sources based on optical injection locked single mode of the femtosecond fiber laser comb. The source is discretely tunable coherent optical sources by two DFB lasers, which are injection-locked to a respective single mode of the fiber laser comb with the frequency difference of 500 MHz, that is exactly twice of the comb repetition frequency.

Coherence transfer of subhertz-linewidth laser light via an 82-km fiber link