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External grating tunable MQW laser with wide tuning range of 240 nm

External grating tunable MQW laser with wide tuning range of 240 nm

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A very wide tuning range in an external grating tunable InGaAs/InGaAsP MQW laser is demonstrated. Second subband recombination occurs in MQW diode at high current density injection. This contributes to gain expansion and a tuning range of 240 nm was obtained when operated continuously (CW) at room temperature.

References

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      • Y. Arakawa , A. Yariv . Quantum well lasers-gain, spectra, dynamics. IEEE J. Quantum Electron. , 1887 - 1899
    2. 2)
      • I.E. Epler , Holonyak , N. Jun , R.D. Burnham , C. Lindstöm , W. Streifer , T.L. Paoli . Broadband tuning (ΔE ~ 100meV) of AlxGa1−xAs quantum well heterostructure lasers with an external grating. Appl. Phys. Lett. , 740 - 742
    3. 3)
      • B.W. Hakki , T.L. Paoli . Gain spectra in GaAs double-heterostructure injection lasers. J. Appl. Phys. , 1299 - 1306
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