Title :
Spectral locking in an extended area two-dimensional coherent grating surface emitting laser array
Author :
Defreez, R.K. ; Ximen, H. ; Bossert, D.J. ; Hunt, J.M. ; Wilson, G.A. ; Elliott, R.A. ; Orloff, J. ; Evans, G.A. ; Carlson, N.W. ; Lurie, M. ; Hammer, J.M. ; Bour, D.P. ; Palfrey, S.L. ; Amantea, R.
Author_Institution :
Dept. of Appl. Phys. & Electr. Eng., Oregon Graduate Center, Beaverton, OR, USA
Abstract :
The spectral properties of a monolithic pair of two-dimensional coherent grating surface emitting (GSE) laser arrays optically coupled by means of total-internal-reflection corner turning mirrors are discussed. Each of the pair consists of six groups of ten laterally Y-coupled, index-guided ridge lasers interspersed with second-order distributed Bragg reflector (DBR) grating sections in the longitudinal direction to provide feedback and surface emitting output coupling. The turning mirrors were formed by focused-ion-beam micromachining channels in the wafer angled at 45 degrees to the laser waveguide. Locking of the emission spectra of the pair of GSE arrays and shifting of the spectrum of one of the pair by varying the drive current to one gain section in the other have been demonstrated.<>
Keywords :
diffraction gratings; distributed Bragg reflector lasers; laser mode locking; semiconductor junction lasers; DBR; drive current; extended area two-dimensional coherent grating surface emitting laser array; feedback; focused-ion-beam micromachining channels; gain section; laterally Y-coupled index guided ridge lasers; longitudinal direction; monolithic pair; second-order distributed Bragg reflector; spectral locking; spectral properties; surface emitting output coupling; total-internal-reflection corner turning mirrors; Distributed feedback devices; Laser feedback; Mirrors; Optical arrays; Optical coupling; Optical feedback; Optical surface waves; Surface emitting lasers; Turning; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
