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- W2471412925 abstract "In the present work the potentials of a monolithically integrated modulator diode for frequency tuning of vertical-cavity surface-emitting lasers (VCSELs) as well as its impact on the laser output power and longitudinal and transversal mode spectra are discussed. Free carrier injection in a modulator pn-junction results in a maximum laser blue-shift of +14GHz. Thermal effects in a similar structure yield a laser red-shift up to -4THz. The quantum-confined Stark effect in a multiple quantum-well modulator showed a maximum cavity resonance red-shift of -2THz in the VCSEL reflection spectra. The limits of frequency tuning are matched when the optimum adjustment between the cavity modes and the laser gain spectrum is detuned, partly enhanced by power dissipation from the modulator diode. Then intensity modulation up to -lOdB is observed. In two longitudinal mode VCSELs this is exploited in terms of wavelength switching of z 20nm. Switching between transversal modes (TEMoo H TEMOl ) is explained by lateral variations in the current or field distribution in the modulator diode resulting in lateral variations of the refractive index in the microcavity. Finally strategies on sample preparation and design are given to overcome these limits." @default.
- W2471412925 created "2016-07-22" @default.
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- W2471412925 date "1996-01-01" @default.
- W2471412925 modified "2023-09-27" @default.
- W2471412925 title "VERTICAL-CAVITY SURFACE-EMITTING LASERS WITH MONO LITHICALLY INTEGRA TED MODULATORS" @default.
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