Journal
JOURNAL OF OPTICS
Volume 18, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2040-8978/18/9/093003
Keywords
vertical-emitting lasers; semiconductor lasers; external-cavity lasers; semiconductor disk lasers; vertical-external-cavity surface-emitting lasers
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Funding
- German Research Foundation (DFG) [SFB1083, GRK1782, RA2841/1-1]
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Within the last two decades, vertical-external-cavity surface-emitting lasers (VECSELs) have attracted rising interest from both industry and science. They have proven to be versatile lasers which can be specifically designed for research and applications that require a particular regime of operation. Various emission schemes ranging from narrow-linewidth emission, pulsed light or multimode emission to a frequency-converted output are feasible owing to remarkable device features. Being composed of a semiconductor gain mirror and an external cavity, not only is a unique access to high-brightness output and a high-beam quality is provided, but also wavelength flexibility. Moreover, the exploitation of intra-cavity frequency conversion further extends the accessible spectral range from the ultraviolet (UV) to the terahertz (THz). In this work, recent advances in the field of VECSELs are highlighted.
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