Abstract
We investigate quantum-dot (QD) lasers in an external cavity using Littrow and Littman configurations. Here, we report on a continuously tunable QD laser with a broad tuning range from 1047 to 1130 nm with high stability and efficient side mode suppression. The full-width at half-maximum of the laser line is 0.85 nm determined mainly by the quality of the external grating. This laser can be operated in a dual-mode modus, where the mode-spacing can be tuned continuously between 1.1 and 34 nm. Simultaneous emission of the two laser modes is shown by sum frequency generation experiments.
Original language | English |
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Pages (from-to) | 1928-1930 |
Number of pages | 3 |
Journal | Journal of Physics D: Applied Physics |
Volume | 36 |
Issue number | 16 |
DOIs | |
State | Published - 21 Aug 2003 |