Aa. Tager et K. Petermann, HIGH-FREQUENCY OSCILLATIONS AND SELF-MODE LOCKING IN SHORT EXTERNAL-CAVITY LASER-DIODES, IEEE journal of quantum electronics, 30(7), 1994, pp. 1553-1561
An effect of compound-cavity mode competition for a laser diode with a
short external cavity is investigated analytically and numerically on
the basis of a round-trip approximation for emitted photons in the ex
ternal cavity. Due to the noncoincidence of the compound-cavity modes
with possible frequencies of stationary lasing, such competition may c
ause self-locking of two compound-cavity modes with deep high-frequenc
y oscillations of the laser output for a short (typically less-than-or
-equal-to 5 mm) external cavity. Simple analytical expressions for cri
tical feedback parameters and the frequencies of self-oscillations are
given, as well as a generalized diagram of different dynamic regimes
of a short external-cavity laser, which shows these regimes of high-fr
equency self-oscillations as well as coherence collapse instability. T
he results may be considered a guideline for the design of high-speed
laser diodes with an integrated passive cavity. In particular, such a
device may be a very efficient pulse source in the microwave (> 20 GHz
) region.