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980 nm spread index laser with strain compensated InGaAs/GaAsP/InGaP and 90% fibre coupling efficiency

980 nm spread index laser with strain compensated InGaAs/GaAsP/InGaP and 90% fibre coupling efficiency

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Single transverse and lateral mode InGaAs/GaAsP/InGaP 980 nm SPIN (spread index) ridge waveguide lasers (3 µm × 750 µm) with symmetric far fields of thetas × thetas|| = 17° × 15°, slope efficiency of ηext = 0.9 W/A and threshold current of Ith = 24 mA have been demonstrated. 90% coupling to singlemode lensed fibre and 52% direct buttcoupling to cleaved fibre has been achieved.

References

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      • M. Ohkubo , T. Ijichi , A. Iketani , T. Kikuta . 980-nm Aluminum-freeInGaAs/InGaAsP/InGaP GRIN-SCH SL-QW lasers. IEEE J. Quantum Electron. , 408 - 414
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