Fundamental mode operation of high-power InGaAs/GaAs/AlGaAs laser arrays

J. S. Tsang*, D. C. Liou, K. L. Tsai, H. R. Chen, Chia-Ming Tsai, C. P. Lee, F. Y. Juang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A new ridge waveguide laser array with stable fundamental mode operation has been fabricated. By introducing absorption regions in all the laser stripes except for the central one, the electric field distribution of the laser arrays and the modal gains of the array supermodes are changed, resulting in fundamental mode operation. The threshold current of an array with five elements is typically 40 mA and the maximum output power is higher than 150 mW. The single-lobed far-field pattern centered at 0° with full width at half maximum of 2° is obtained at 1.5 times of the threshold current (I th).

Original languageEnglish
Pages (from-to)4706-4708
Number of pages3
JournalJournal of Applied Physics
Issue number9
StatePublished - 1993


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