Improving the modulation efficiency of high-power distributed Bragg reflector tapered diode lasers

Different measures to improve the modulation efficiency of a distributed Bragg reflector tapered diode laser emitting at 1060 nm were investigated. Due to the 6-mm long cavity, the device reached an output power of 10 W with a nearly diffraction-limited beam quality. The input currents to the ridge-...

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Bibliographic Details
Published inApplied physics. B, Lasers and optics Vol. 102; no. 1; pp. 43 - 47
Main Authors Hasler, K.-H., Sumpf, B., Adamiec, P., Fricke, J., Wenzel, H., Erbert, G., Tränkle, G.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 2011
Subjects
Beams (radiation)
Bragg reflectors
Diffraction
Diode lasers
Engineering
Holes
Lasers
Modulation
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Spectral emissivity
Front Facet
Beam Quality Factor
Beam Quality
Beam Waist
Astigmatism
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Summary:Different measures to improve the modulation efficiency of a distributed Bragg reflector tapered diode laser emitting at 1060 nm were investigated. Due to the 6-mm long cavity, the device reached an output power of 10 W with a nearly diffraction-limited beam quality. The input currents to the ridge-waveguide (RW) and tapered gain-region sections can be independently controlled. This allows a low-current modulation of the optical output power in the Watt range. Under optimized quasi-static conditions the power could be modulated between 0.2 and 3.1 W (4.8 W) by a variation of the RW current between 0 and 50 mA (350 mA). Due to the integrated 6th order surface Bragg grating the emission wavelength remains within the spectral range of 80 pm.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-010-4226-0