Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 32,
  • Issue 1,
  • pp. 20-26
  • (2014)

Vertical-Cavity Surface-Emitting Laser With Cholesteric Liquid Crystal Overlay

Not Accessible

Your library or personal account may give you access

Abstract

We study theoretically the spectral and polarization threshold characteristics of vertical-cavity surface-emitting lasers with an overlay of cholesteric liquid crystal (CLC-VCSELs). Due to the existence of CLC band gap for circularly polarized (CP) light the polarization state of the resonant modes in the compound system evolves from linear (LP) inside the VCSEL to elliptical and circular (CP) inside the CLC. As a result, the output mirror reflectivity is increased and CLC-VCSEL threshold gain is decreased. We elucidate the transition from LP to CP state of the generated light by studying the role of the CLC thickness and the top distributed Bragg reflector reflectivity. This transition takes place for 5–6 $\mu$ m thick CLC and is not gradual but happens in an oscillatory fashion. When the CLC thickness is fixed and the VCSEL top mirror reflectivity is decreased a profound gradual red shift of the resonant mode wavelength and increase of threshold gain are observed.

© 2013 IEEE

PDF Article
More Like This
Vertical-cavity surface-emitting laser with liquid crystal overlay

Krassimir Panajotov and Hugo Thienpont
Opt. Express 19(18) 16749-16759 (2011)

Vertical-cavity surface-emitting laser with a liquid crystal external cavity

Yi Xie, Jeroen Beeckman, Krassimir Panajotov, and Kristiaan Neyts
Opt. Lett. 39(22) 6494-6497 (2014)

Nano-polymer-dispersed liquid crystal as phase modulator for a tunable vertical-cavity surface-emitting laser at 1.55 μm

C. Levallois, B. Caillaud, J.-L. de Bougrenet de la Tocnaye, L. Dupont, A. Lecorre, H. Folliot, O. Dehaese, and S. Loualiche
Appl. Opt. 45(33) 8484-8490 (2006)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved