Picosecond gain dynamics of an actively mode-locked external-cavity laser diode

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.301639· OSTI ID:7148879

Hoffman, M; Koch, M; Feldman, J; Elsaesser, W; Chow, W W ^[1]

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1. Sandia National Lab., Albuquerque, NM (United States)

The authors report a new experimental approach to study the temporal gain dynamics of an actively mode-locked external-cavity laser diode. The experiment can be viewed as an electrical pump-optical probe technique. Picosecond time resolution is achieved by synchronizing the actively mode-locked semiconductor laser to a mode-locked Ti:sapphire laser. The transmission of the Ti:sapphire pulses through the active region of the laser diode is then measured as a function of photon energy and delay time. The experiment allows to investigate the dynamics of the entire gain spectrum with picosecond time resolution since the Ti:sapphire laser is wavelength tunable. On the basis of these data they are able to determine directly the wavelength dependence of the differential gain. The results compare well with microscopic calculations. The implication for the mode-locking behavior of the diode laser is discussed.

• OSTI ID: 7148879
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States) Vol. 30:8; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
DATA
ELECTROMAGNETIC PULSES
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
GAIN
INFORMATION
LASER CAVITIES
LASERS
MODE LOCKING
NUMERICAL DATA
PULSES
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS