The authors report the demonstration of the bandgap-tuned InAs quantum dash broadband laser with widened laser emission linewidth at room temperature using postgrowth intermixing technique. The 100 nm wavelength blueshifted, as-cleaved laser exhibits ultrabroad lasing spectral coverage of ∼85 nm at a center wavelength of 1.54 μm with a total emission power of ∼1 W per device. Compared to the as-grown laser, this laser shows broader lasing bandwidth (∼41 nm) with improved spectral ripple (<1 dB).
Bibliographical noteFunding Information:
This work was supported by National Science Foundation (Grant No. 0725647), U.S. Army Research Laboratory, Commonwealth of Pennsylvania, Department of Community and Economic Development. The authors also acknowledge IQE Inc. for the growth of Qdash material.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)