Title :
Harmonic distortion in 1.55-μm vertical-cavity lasers
Author :
Piprek, J. ; Takiguchi, K. ; Black, K.A. ; Hu, E.L. ; Bowers, J.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
We investigate second and third order harmonics in the analog modulation response of InP-GaAs fused 1.55-μm vertical-cavity lasers (VCLs). These devices exhibit the lowest threshold current as well as the highest temperature of continuous-wave operation of any electrically pumped long wavelength VCL. Near the resonance frequency, harmonic distortion is dominated by electron-photon interaction, and it is close to the distortion measured with in-plane lasers. At low frequencies, distortions seem to be dominated by carrier transport effects. At 1 GHz modulation frequency, we measure a maximum spur-free dynamic range of 64 dB Hz12/ for second-order harmonic distortion and 81-dB Hz23/ for third-order harmonic distortion.
Keywords :
III-V semiconductors; carrier mobility; gallium arsenide; harmonic distortion; indium compounds; laser cavity resonators; optical transmitters; semiconductor lasers; surface emitting lasers; 1.55 mum; 1.55-/spl mu/m vertical-cavity lasers; GHz modulation frequency; InP-GaAs; analog modulation response; carrier transport effects; continuous-wave operation; electrically pumped long wavelength vertical cavity lasers; electron-photon interaction; harmonic distortion; in-plane lasers; lowest threshold current; maximum spur-free dynamic range; third order harmonics; third-order harmonic distortion; Distortion measurement; Frequency measurement; Harmonic distortion; Laser noise; Pump lasers; Resonance; Temperature; Threshold current; Vertical cavity surface emitting lasers; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
