Monolithic mode-locked quantum dot lasers

Quantum-dot active material systems are proving to be an excellent choice for mode-locked laser applications. High-power, high repetition-rate picosecond and sub-picosecond pulse generation is now readily achievable with promising results for ultra-low jitter performance. © 2006 Optical Society of America.

Single mode performance of a single mode injected locked quantum dot laser

An injection locked QD laser is demonstrated to provide single longitudinal mode operation with a 40dB SMSR and an improvement in RIN peak from 1.3-2.3GHz. Alpha factor is measured to be 0.8. © 2005 Optical Society of America.

Single mode performance of a single mode injected locked quantum dot laser

An injection locked QD laser is demonstrated to provide single longitudinal mode operation with a 40dB SMSR and an improvement in RIN peak from 1.3-2.3GHz. Alpha factor is measured to be 0.8. © 2005 Optical Society of America.

20GHz colliding pulse mode-locking of ingaas quantum dot lasers

Colliding pulse mode-locking is demonstrated for the first time in quantum-dot lasers. Close to transform limited, 7ps, 20GHz pulses are achieved using an absorber length considerably longer than typically used in similar quantum-well lasers. © 2004 Optical Society of America.

All-fiber Yb-doped laser mode-locked by nanotubes

Single-wall carbon nanotubes (SWNTs) and graphene have emerged as promising saturable absorbers (SAs), due to their broad operation bandwidth and fast recovery times [1-3]. However, Yb-doped fiber lasers mode-locked using CNT and graphene SAs have generated relatively long pulses. All-fiber cavity designs are highly favored for their environmental robustness. Here, we demonstrate an all-fiber Yb-doped laser based on a SWNT saturable absorber, which allows generation of 8.7 ps-long pulses, externally compressed to 118 fs. To the best of our knowledge, these are the shortest pulses obtained with SWNT SAs from a Yb-doped fiber laser. © 2013 IEEE.