V-groove distributed feedback laser for 1.3–1.55 μm operation

Temkin, H.; Dolan, G. J.; Wilt, D. P.; Logan, R. A.; Lahtinen, J. A.
November 1986
Applied Physics Letters;11/3/1986, Vol. 49 Issue 18, p1148
Academic Journal
We describe a V-groove distributed feedback laser operating at λ=1.5 μm. A second-order diffraction grating has been defined by electron beam writing and transferred using ion beam milling after the crystal growth was completed. A single longitudinal mode operation with a mode rejection ratio larger than 5000:1 has been obtained under modulation rate of 1 GHz. The techniques used in this work can be applied to other types of buried heterostructure lasers.


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