Title :
Mode-locking at very high repetition rates more than terahertz in passively mode-locked distributed-Bragg-reflector laser diodes
Author :
Arahira, Shin ; Matsui, Yasuhiro ; Ogawa, Yoh
Author_Institution :
Semicond. Technol. Lab., Oki Electr. Ind. Co. Ltd., Tokyo, Japan
fDate :
7/1/1996 12:00:00 AM
Abstract :
We propose a technique for achieving mode-locking at very high repetition rates more than terahertz with high output power using a distributed-Bragg-reflector (DBR) laser, including an intracavity saturable absorber. This method is based on harmonic passive mode-locking at high gain levels and the selectivity of harmonic numbers related to the spectrum-filtering property of the intracavity Bragg reflector. Transform-limited pulses at repetition rates from 500 GHz to 1.54 THz were generated with an output power exceeding 15 mW. We studied stability of harmonic pulses by using conventional self-consistent mode-locking equations. We also discuss the effect of the spectrum-filtering properties of the intracavity Bragg reflector to the characteristics of mode-locked pulses
Keywords :
distributed Bragg reflector lasers; laser cavity resonators; laser mode locking; laser stability; optical filters; optical saturable absorption; semiconductor lasers; 15 mW; DBR laser; harmonic numbers; harmonic passive mode-locking; harmonic pulse stability; high gain levels; high output power; intracavity Bragg reflector; intracavity saturable absorber; mode-locked pulses; output power; passively mode-locked distributed-Bragg-reflector laser diodes; repetition rates; self-consistent mode-locking equations; spectrum-filtering properties; spectrum-filtering property; transform-limited pulses; very high repetition rates; Diode lasers; Distributed Bragg reflectors; High speed optical techniques; Laser mode locking; Optical harmonic generation; Optical pulse generation; Optical pulses; Power generation; Power harmonic filters; Stability;
Journal_Title :
Quantum Electronics, IEEE Journal of
