The University of Southampton
University of Southampton Institutional Repository

Selective amplification of frequency comb modes via optical injection locking of a semiconductor laser: influence of adjacent unlocked comb modes

Selective amplification of frequency comb modes via optical injection locking of a semiconductor laser: influence of adjacent unlocked comb modes
Selective amplification of frequency comb modes via optical injection locking of a semiconductor laser: influence of adjacent unlocked comb modes
Optical injection locking can be used to isolate and amplify individual comb modes from an optical frequency comb (OFC). However, it has been observed that for narrow spaced OFCs (e.g. 250 MHz), the adjacent comb modes are still present in the output of the locked laser. These residual modes experience some amplification relative to the injected signal, however the gain is significantly less than for the locked mode. We report the measurement of this sidemode amplification for a semiconductor laser injection locked to a 250 MHz spaced OFC. It was found that this amplification can be well suppressed by tuning the frequency difference between the free running laser and the OFC mode it was locked to. The sidemode amplification was then investigated numerically by solving the laser rate equations under optical injection. It was found that the main contribution to the sidemode amplification was due to phase modulation induced by the residual comb modes. The detuning dependent suppression occurs due to destructive interference between pairs of equidistant comb modes.
SPIE
Wu, D.S.
c481e386-278d-4c43-b8da-49767316063e
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Slavík, R.
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Wu, D.S.
c481e386-278d-4c43-b8da-49767316063e
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Slavík, R.
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d

Wu, D.S., Richardson, D.J. and Slavík, R. (2013) Selective amplification of frequency comb modes via optical injection locking of a semiconductor laser: influence of adjacent unlocked comb modes. In Integrated Optics: Physics and Simulations. vol. 8781, SPIE. 8 pp . (doi:10.1117/12.2017371).

Record type: Conference or Workshop Item (Paper)

Abstract

Optical injection locking can be used to isolate and amplify individual comb modes from an optical frequency comb (OFC). However, it has been observed that for narrow spaced OFCs (e.g. 250 MHz), the adjacent comb modes are still present in the output of the locked laser. These residual modes experience some amplification relative to the injected signal, however the gain is significantly less than for the locked mode. We report the measurement of this sidemode amplification for a semiconductor laser injection locked to a 250 MHz spaced OFC. It was found that this amplification can be well suppressed by tuning the frequency difference between the free running laser and the OFC mode it was locked to. The sidemode amplification was then investigated numerically by solving the laser rate equations under optical injection. It was found that the main contribution to the sidemode amplification was due to phase modulation induced by the residual comb modes. The detuning dependent suppression occurs due to destructive interference between pairs of equidistant comb modes.

Text
5772 - Other
Download (514kB)

More information

e-pub ahead of print date: April 2013
Additional Information: 8781-17
Venue - Dates: SPIE Optics + Optoelectronics, 2013, Prague, Czech Republic, 2013-04-15 - 2013-04-18
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 368319
URI: https://eprints.soton.ac.uk/id/eprint/368319
PURE UUID: 86296965-3008-4133-9c55-bf4907420b75
ORCID for D.J. Richardson: ORCID iD orcid.org/0000-0002-7751-1058
ORCID for R. Slavík: ORCID iD orcid.org/0000-0002-9336-4262

Catalogue record

Date deposited: 18 Sep 2014 13:06
Last modified: 19 Nov 2019 02:02

Export record

Altmetrics

Contributors

Author: D.S. Wu
Author: D.J. Richardson ORCID iD
Author: R. Slavík ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×