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Intermodal injection locking of semiconductor lasers

Intermodal injection locking of semiconductor lasers

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© The Institution of Electrical Engineers
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Injection locking of a GaAlAs laser by coupling into non-lasing Fabry-Perot modes is described. Locking of a slave laser mode as far as 22 mode spacings (60 Å) away from the gain curve centre is obtained. The dependence of the locking bandwidth on the injected power and the wavelength separation between the free-running and injected mode (Δλ) is described. The dependence of the power required for locking on the magnitude of Δλ is consistent with a 192 Å-wide quadratic gain profile.

Inspec keywords: III-V semiconductors; semiconductor junction lasers; laser mode locking; gallium arsenide; aluminium compounds

Other keywords: injected power; nonlasing Fabry Perot modes; locking bandwidth; GaAlAs laser; semiconductor lasers; slave laser mode; intermodal injection locking; quadratic gain profile; wavelength separation

Subjects: Semiconductor lasers; Laser beam modulation, pulsing and switching; mode locking and tuning; Lasing action in semiconductors

References

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      • S. Kobayashi , T. Kimura . Injection locking in AlGaAs semiconductor laser. IEEE J. Quantum Electron. , 681 - 689
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      • S. Kobayashi , T. Kimura . Gain and saturation power of AlGaAs resonant amplifier. Electron. Lett. , 230 - 232
    3. 3)
      • D. Ross . (1969) , Lasers light amplifiers and oscillators.
    4. 4)
      • L. Goldberg , H.F. Taylor , J.F. Weller . Locking bandwidth asymmetry in injection locked GaAlAs lasers. Electron. Lett. , 986 - 987
    5. 5)
      • L. Goldberg , H.F. Taylor , J.F. Weller . FM sideband injection locking of diode lasers. Electron. Lett. , 1019 - 1020
    6. 6)
      • N. Gade , J.H. Osmundsen . Gain measurement on semiconductor lasers by optical feedback from an external grating cavity. IEEE J. Quantum Electron. , 1238 - 1242
    7. 7)
      • L. Goldberg , H.F. Taylor , A. Dandridge , J.F. Weller , R.O. Miles . Spectral characteristics of semiconductor lasers with optical feedback. IEEE J. Quantum Electron. , 555 - 564
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