Open AccessMiniaturised master‐oscillator power‐amplifier emitting a single longitudinal mode with more than 300 mW at 647 nm
Author(s) -
Blume Gunnar,
Pohl Johannes,
Feise David,
Wiedmann Jörg,
Matalla Matthias,
John Wilfred,
Ressel Peter,
Kreuzmann Sabrina,
Ginolas Arnim,
Sahm Alexander,
Johne Pia,
Jendrzejewski Maik,
Kürbis Christian,
Hofmann Julian,
Eppich Bernd,
Erbert Götz,
Paschke Katrin
Publication year - 2016
Publication title -
iet optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.379
H-Index - 42
eISSN - 1751-8776
pISSN - 1751-8768
DOI - 10.1049/iet-opt.2015.0122
Subject(s) - materials science , amplifier , optics , laser linewidth , distributed bragg reflector laser , laser , optoelectronics , longitudinal mode , distributed bragg reflector , wavelength , physics , cmos
A miniaturised red‐emitting master‐oscillator power‐amplifier (MOPA) was developed. The MOPA emits a single longitudinal mode with a linewidth below 10 MHz and an optical output power of more than 300 mW at a wavelength of about 647 nm. The master‐oscillator is a distributed‐Bragg‐reflector ridge‐waveguide laser which provides the single mode with an output power of about 40 mW. The light is shaped by micro‐lenses and guided through a miniaturised CdMnTe‐Faraday isolator as well as a truncated tapered power amplifier; it is reshaped again afterwards to produce an almost circular, nearly diffraction‐limited beam. The total length of the MOPA is below 50 mm, which fitted into a sealed butterfly package with a footprint of about 20 cm 2 .