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Pressure tuning of external‐cavity tapered laser
Author(s) -
Trzeciakowski W.,
Dybala F.,
Mrozowicz M.,
Bercha A.,
Piechal B.,
Ostendorf R.,
Gilly J.,
Kelemen M. T.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200880512
Subject(s) - materials science , laser , optoelectronics , diode , optics , grating , absorption (acoustics) , diffraction , photorefractive effect , crystal (programming language) , beam (structure) , laser diode , physics , computer science , composite material , programming language
Pressure tuning (in the 20 kbar range) was performed for external‐cavity laser diode coupled to photorefractive crystal (BaTiO 3 and KNbO 3 ) and coupled to diffraction grating. The diodes were high power InGaAs/AlGaAs tapered lasers emitting around 975 nm at ambient conditions with beam parameter M 2 = 1.3. The beam parameter of the laser remained stable with pressure. Side modes were suppressed by 40 dB in external cavities. The maximum tuning range was 140 nm (from 987 nm to 847 nm). Above 3 A current the lasers degraded due to Catastrophic Optical Damage, probably due to residual absorption in the liquid. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)