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Photonic crystal spatial filtering in broad aperture diode laser
- Source :
- UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Recercat. Dipósit de la Recerca de Catalunya, instname
- Publication Year :
- 2019
-
Abstract
- Broad aperture semiconductor lasers usually suffer from low spatial quality of the emitted beams. Due to the highly compact character of such lasers, the use of conventional intracavity spatial filters is problematic. We demonstrate that extremely compact photonic crystal spatial filters, incorporated into a laser resonator, can improve the beam spatial quality and, correspondingly, increase the brightness of the emitted radiation. We report the decrease in the M2 value from 47 down to 28 due to photonic crystal spatial intracavity filtering and the increase in the brightness by a factor of 1.5, giving a proof of principle of intracavity photonic crystal spatial filtering in broad area semiconductor lasers.
- Subjects :
- Optical devices
Brightness
Materials science
Physics and Astronomy (miscellaneous)
Aperture
FOS: Physical sciences
Physics::Optics
02 engineering and technology
01 natural sciences
Semiconductor laser theory
law.invention
Photonic crystals
Optics
law
0103 physical sciences
Diode
Photonic crystal
Lenses
010302 applied physics
Semiconductor lasers
Bessel beam
Làsers
Spatial filter
Física [Àrees temàtiques de la UPC]
business.industry
Lasers
Gaussian beam optics
021001 nanoscience & nanotechnology
Laser
Optical cavity
Physics::Accelerator Physics
Microfabrication
0210 nano-technology
business
Cristalls fotònics
Optics (physics.optics)
Physics - Optics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC), Recercat. Dipósit de la Recerca de Catalunya, instname
- Accession number :
- edsair.doi.dedup.....8b9dd739e546f0857732043d7cbbb7d4