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Published on: November 22, 2019
Frequency-modulation mode locking of a semiconductor laser.
Optics Letters
|September 29, 2009
Summary
We achieved frequency modulation mode locking in a semiconductor laser. This resulted in 24-picosecond pulses at a 1.5 GHz repetition rate, advancing laser technology.
Area of Science:
- Optics and Photonics
- Semiconductor Lasers
- Mode Locking
Background:
- Mode locking is crucial for generating ultrashort laser pulses.
- Semiconductor lasers offer compact and efficient light sources.
- Extended-cavity designs enhance laser performance and tunability.
Purpose of the Study:
- To demonstrate frequency modulation (FM) mode locking in an extended-cavity semiconductor laser.
- To investigate the performance of a tunable distributed Bragg reflector (DBR) gain medium.
- To generate and characterize ultrashort optical pulses.
Main Methods:
- Utilized an extended-cavity semiconductor laser.
- Incorporated a tunable distributed Bragg reflector (DBR) gain medium.
- Employed FM mode locking techniques.
Main Results:
- Successfully achieved FM mode locking.
- Generated optical pulses with a duration of 24 picoseconds (ps).
- Obtained a high repetition rate of 1.5 gigahertz (GHz).
Conclusions:
- FM mode locking is effective in extended-cavity semiconductor lasers.
- The tunable DBR gain medium enables efficient pulse generation.
- This work contributes to the development of high-repetition-rate, short-pulse semiconductor lasers.
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