Selective injection locking of a multi-mode semiconductor laser to a multi-frequency reference beam

• Published in: The European physical journal. D, Atomic, molecular, and optical physics Vol. 68; no. 7
• Main Authors: Pramod, Mysore Srinivas, Yang, Tao, Pandey, Kanhaiya, Giudici, Massimo, Wilkowski, David
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2014; EDP Sciences
• Subjects: Applications of Nonlinear Dynamics and Chaos Theory; Atomic; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Lasers; Measurements common to several branches of physics and astronomy; Metrology; Metrology, measurements and laboratory procedures; Molecular; Optical and Plasma Physics; Optics; Physical Chemistry; Physics; Physics and Astronomy; Quantum Information Technology; Quantum Physics; Regular Article; Semiconductor lasers; laser diodes; Spectroscopy/Spectrometry; Spintronics; Time and frequency; Units and standards; Optical Phenomena and Photonics; Single mode laser; Semiconductor lasers; Coherent radiation; Frequency measurement; Injection locking; Frequency filtering; Standards
• ISSN: 1434-6060; 1434-6079
• DOI: 10.1140/epjd/e2014-40732-4

Injection locking is a well known and commonly used method for coherent light amplification. Usually injection locking is obtained on a single-mode laser injected by a single-frequency seeding beam. In this work we show that selective injection locking of a single-frequency may also be achieved on a multi-mode semiconductor laser injected by a multi-frequency seeding beam, if the slave laser provides sufficient frequency filtering. This selective injection locking condition depends critically on the frequency detuning between the free-running slave emission frequency and each injected frequency component. Stable selective injection locking to a set of three seeding components separated by 1.2 GHz is obtained. This system provides an amplification up to 37 dB of each component. This result suggests that, using distinct slave lasers for each frequency line, a set of mutually coherent high-power radiation modes can be tuned in the GHz frequency domain.