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Journal of Materials Science and Nanotechnology | Volume: 2
August 23-24, 2018 | Paris, France
Laser, Optics and Photonics
International Conference on
I
n this work we discuss diode laser architectures using
nonlinear optical interaction and feedback techniques.
Different external-cavity feedback techniques to improve
the spatial beam quality and narrow the linewidth of the
output beam from both BALs and TDLs are presented. Broad
area diode laser systemwith external cavity feedback around
800nm can produce several Watts of output power with a
good beamquality. Tapered diode laser systems with external
cavity feedback around 800nm and 1060nm can deliver more
than 2W output power with diffraction-limited beam quality
and can be operated in single-longitudinal mode. These high
brightness, narrow linewidth, and tunable external-cavity
diode lasers can emerge as the next generation of compact
lasers that have the potential of replacing conventional high-
power laser systems in many existing applications. In the
talk we also present results of a tunable high power GaN
green diode laser based on Littrow external-cavity feedback.
Speaker Biography
Paul Michael Petersen is full professor in New Light Sources at the Technical University
of Denmark. His research focuses on lasers, LEDs and biomedical optics. He has
authored more than 150 international scientific publications and holds 15 patents.
He is chairman of DOLL – a Photonics Green lab that tests and develops new lighting
technology based on LED and diode laser technologies. From 2002 until 2012 he
was appointed adjunct professor in Optics at the Niels Bohr Institute, Copenhagen
University.
e:
pape@fotonik.dtu.dkPaul Michael Petersen
Mingjun Chi
DTU Fotonik, Denmark
Diode laser architectures using nonlinear optical interaction and feedback techniques