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Line narrowed picosecond optical pulse generation using three contact InGaAsP/InP multiquantum well distributed feedback laser under gain switching

Line narrowed picosecond optical pulse generation using three contact InGaAsP/InP multiquantum well distributed feedback laser under gain switching

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© The Institution of Electrical Engineers
Published

A three contact multiquantum well (MQW) distributed feedback (DFB) laser has been gain switched to generate tunable picosecond optical pulses with substantially reduced chirp (as low as 0.6Å) when compared with that possible using equivalent single contact devices. This spectral performance is achieved by using the central device region to control the wavelength of the picosecond pulses generated through modulation of the end contacts. Near Fourier limited duration-bandwidth products as low as 0.26 are observed.

Inspec keywords: semiconductor junction lasers; laser tuning; indium compounds; distributed feedback lasers; III-V semiconductors; gallium arsenide; high-speed optical techniques

Other keywords: multiquantum well; DFB lasers; distributed feedback laser; picosecond pulses; line narrowed picosecond pulse generation; gain switching; semiconductors; picosecond optical pulse generation; spectral performance; Fourier limited duration-bandwidth products; central device region; reduced chirp; InGaAs-InP; three contact laser; tunable picosecond optical pulses

Subjects: Design of specific laser systems; Laser beam modulation, pulsing and switching; mode locking and tuning; Ultrafast optical techniques; Lasing action in semiconductors; Semiconductor lasers

References

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