@article{40d5920cddcd4a0588d759dda6986582,
title = "Mode formation in broad area quantum dot lasers at 1060 nm",
abstract = "An analysis of the transverse and longitudinal mode structure of broad area quantum dot lasers emitting at 1060 nm is presented. In particular, temperature is shown to play an important role in the stabilisation of the transverse mode structure of the devices. In addition, the investigation of the interaction between these transverse modes, through the measurement of the spatial intensity correlation, shows that the laser retains some modal properties in the unstable regime. Finally, measurements of spectral correlations between longitudinal mode groups display a strong dependency on their respective transverse mode structures indicating the importance of spatial overlap.",
keywords = "Broad-area lasers, Quantum dots, Semiconductor lasers, Spatio-temporal instabilities, Transverse mode",
author = "Y. Tanguy and J. Muszalski and J. Houlihan and G. Huyet and Pearce, {E. J.} and Smowton, {P. M.} and M. Hopkinson",
note = "Funding Information: To summarise, in this paper we have presented experimental results which investigate mode formation in broad area quantum dot lasers at 1060 nm. These lasers have exhibited stable transverse mode operation in both pulsed and CW regime for low output powers and unstable operation for high output powers. This transition to unstable operation is delayed to higher currents in the CW regime suggesting that thermal effects may have an important role to play in future, high brightness designs. The optical spectrum of such devices tends to separate into groups of longitudinal modes, the modes within each group having an identical transverse structure indicating a strong coupling between adjacent longitudinal modes. In addition, the coupling between mode groups, while high for some parameter ranges depends strongly on the degree of spatial overlap of mode groups. We acknowledge Science Foundation Ireland for financial support under the program SFI/01/F.1/CO13, and R. Gillen, J. Lucey and C. Roche for technical assistance.",
year = "2004",
month = may,
day = "15",
doi = "10.1016/j.optcom.2004.02.048",
language = "English",
volume = "235",
pages = "387--393",
journal = "Optics Communications",
issn = "0030-4018",
publisher = "Elsevier",
number = "4-6",
}