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- W2082351812 abstract "Constricted double-heterojunction (CDH) lasers have been prepared in a double-dovetail channel structure, which consistently provides cw fundamental-mode operation. Oscillation in both single lateral and single longitudinal modes (spectral halfwidth <0.09 Å) is obtained at drive currents 50–100% above threshold and to cw power levels as high as 12 mW. ’’Kinkless’’ power-current curves at 20 and 70°C have been obtained from all lasers prepared to date to power levels close to that at which degradation occurs (∼30 mW cw at 20 °C for a 3–4-μm-wide lasing region). Threshold currents of 55–75 mA and external differential quantum efficiencies (one facet) of 15–17% are obtained from 120–150-μm-long diodes with a reflector on one facet. Threshold current ratios as low as 1.26 have been measured between 20 and 70 °C." @default.
- W2082351812 created "2016-06-24" @default.
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- W2082351812 date "1978-11-15" @default.
- W2082351812 modified "2023-09-26" @default.
- W2082351812 title "Singe-mode cw operation of ’’double-dovetail’’ constricted DH (AlGa)As diode lasers" @default.
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- W2082351812 doi "https://doi.org/10.1063/1.90196" @default.
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