Lateral waveguiding in stripe-geometry double-heterostructure lasers below the lasing threshold |
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| Authors: | Engelmann R. Kerps D. Nunes F. |
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| Affiliation: | Solid State Laboratory, Hewlett-Packard Laboratories, Palo Alto, CA, USA; |
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| Abstract: | Structure in the far-field pattern of current-confined stripe-geometry double-heterostructure lasers in the angle rangepm 20degis observed at current levels of less thanfrac{1}{4}of threshold value. The behavior is explained by leaky-mode guiding due to a gain maximum under the stripe and to a negative refractive index step on the order of -0.01. |
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