Title :
High-speed vertical-cavity surface emitting laser
Author :
Shtengel, G. ; Temkin, H. ; Brusenbach, P. ; Uchida, T. ; Kim, M. ; Parsons, C. ; Quinn, W.E. ; Swirhun, S.E.
Author_Institution :
Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO, USA
Abstract :
Planar, gain-guided vertical-cavity surface-emitting lasers (VCSELs) with a modulation bandwidth of 14 GHz are described. This bandwidth is reached at a drive current of only 8 mA. The intrinsic bandwidth of these devices is estimated to be greater than 50 GHz. Nonlinear light-current characteristics of these lasers may lead to a high level of nonlinear harmonic distortion of the high-frequency output. It is shown that the relative intensity of the second-harmonic response decreases rapidly at higher drive currents, in agreement with a phenomenological model based on the DC characteristics of the laser.<>
Keywords :
laser cavity resonators; mirrors; optical modulation; semiconductor lasers; 14 GHz; 50 GHz; 8 mA; DC characteristics; VCSELs; drive current; gain-guided; high-frequency output; high-speed vertical-cavity surface emitting laser diode; higher drive currents; intrinsic bandwidth; modulation bandwidth; nonlinear harmonic distortion; nonlinear light-current characteristics; phenomenological model; planar gain-guided lasers; relative intensity; second-harmonic response; Bandwidth; Harmonic distortion; Implants; Laser modes; Laser noise; Mirrors; Optical surface waves; Surface emitting lasers; Thermal resistance; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
