Abstract
The longitudinal multi-mode emission in a vertical-externalcavity surface-emitting laser is investigated using both single shot streak camera measurements and interferometric measurement techniques. For this, the laser is operated in the single-And two-color emission regime using both an etalon and a free-running configuration without etalon, respectively. The laser emission is analyzed with respect to pump power and output coupling losses for a long and for a short resonator. We observe a steep increase of emission bandwidth close to the laser threshold and monitor the transition between longitudinal single-And multi-mode operation. Additionally, the results indicate that a stable two-color operation is related to a sufficiently high number of oscillating longitudinal modes within each color.
Original language | British English |
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Pages (from-to) | 31940-31950 |
Number of pages | 11 |
Journal | Optics Express |
Volume | 21 |
Issue number | 26 |
DOIs | |
State | Published - 30 Dec 2013 |