Yue Cai

37.4 fs pulse generation in an Er:fiber laser at a 225 MHz repetition rate

We report 37.4 fs pulse generation from a ring-cavity Er:fiber laser at a repetition rate of 225 MHz. The spectral bandwidth of the pulse is 135 nm. The single-pulse energy is 0.31 nJ.

Novel Ring Cavity for Ytterbium-Doped Mode-Locked Fiber Laser Incorporated With Both SESAM and Grating Pair

A novel ring cavity incorporated with both semiconductor saturable absorber mirror and grating pair is proposed and demonstrated in a Yb-doped fiber laser. The laser proves self-starting and delivers 84-fs pulses at 1038 nm with a spectral bandwidth of 22 nm. The pulse energy is 0.55 nJ.

Femtosecond Er doped fiber laser using high modulation depth SESAM based on metal/dielectric hybrid mirror

We proposed and fabricated a metal/dielectric mirror based high modulation depth semiconductor saturable absorber mirror (SESAM), for ease of the growth restrictions. Using such a SESAM, we obtained self-starting mode-locking in a ring cavity fiber laser, which produced 102 fs pulses at a repetition rate of 36.2 MHz.

Erbium-Doped Fiber Lasers Operated in a Strong Normal Dispersion Regime at Low Repetition Rate

We report on a passively mode-locked erbium-doped fiber laser with a repetition rate as low as 1.2 MHz in a strong normal dispersion regime. The laser was mode locked via spectral filtering. It generated a pulse with large and linear chirp that can be dechirped to 430 fs outside the cavity.

Advances in SESAM and carbon nanotube saturable absorber mode locked fiber lasers

The paper summarizes recent advances in Er and Yb doped mode locked fiber lasers with saturable absorbers such as semiconductor and carbon nanotube saturable absorbers.

Simplified cavity for erbium-doped fiber laser mode locked with spectral filtering

We report a simplified mode-locked Er fiber laser in normal dispersion with birefringence filters compared with the one with nonlinear polarization evolution mechanism.

Ultra-low repetition rate SESAM-mode-locked linear-cavity erbium-doped fiber laser

We investigated linear-cavity with ultra-low repetition rate Erbium-doped fiber laser mode-locked by a high modulation depth SESAM. Output pulses were highly-chirped, at energy up to 14 nJ and minimum repetition rate was 25 kHz.

Ultra-low repetition rate all-normal-dispersion linear-cavity mode-locked fiber lasers

We demonstrate the long linear-cavity with ultra-low repetition rate Ytterbium-doped fiber laser mode-locked by a SESAM. Output pulses were highly-chirped, with energies high to 75.2 nJ and minimum repetition rate was 191 kHz.

Femtosecond laser pulse generation in an erbium-doped ring cavity fiber laser with a single-wall carbon-nanotube saturable absorber

We demonstrate a new saturable absorber mirror coated with thin-film single-wall carbon nanotubes. Using such a device, we build a T-type ring cavity fiber laser and obtained pulses of 586 fs.

A simple and accurate measurement of fiber time delay in free-running linear-cavity laser configuration

A simple, convenient and accurate technique for measurement of time delay in fiber by using a free-running linear-cavity laser is demonstrated. The uncertainty of time delay was in the order of 10⁻⁷ ~ 10⁻⁶.