Photonic band edge lasing in dye-doped chiral nematic bimesogen liquid crystals

Alison Ford; Stephen Morris; Mikhail Pivnenko; Andrew Blatch; Harry Coles

doi:10.1117/12.593330

12 April 2005 Photonic band edge lasing in dye-doped chiral nematic bimesogen liquid crystals

Alison Ford, Stephen Morris, Mikhail Pivnenko, Andrew Blatch, Harry Coles

Proceedings Volume 5741, Emerging Liquid Crystal Technologies; (2005) https://doi.org/10.1117/12.593330
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

In this paper we investigate Photonic Band Edge (PBE) lasing from a homologous series of non-symmetric bimesogen liquid crystals (the mesogenic units are not identical) with varying physical parameters. A homologous series was synthesised, where the number of methylene units in the linking flexible spacer chain ranged from 6 to 12. Our results show a clear odd-even effect within the threshold values and slope efficiencies, of the PBE lasers, when plotted as a function of the number of methylene units in the spacer chain. The even spacer bimesogen PBE lasers performed with an overall higher efficiency (< 2μJ/pulse threshold values and 8% slope efficiency) than the odd spacer bimesogens PBE lasers (3.5μJ/pulse threshold values and 1% slope efficiency). We believe that this odd-even effect is due to the odd-even effect observed within the host physical parameters; a consequence of the molecular shape anisotropy

Citation Download Citation

Alison Ford, Stephen Morris, Mikhail Pivnenko, Andrew Blatch, and Harry Coles "Photonic band edge lasing in dye-doped chiral nematic bimesogen liquid crystals", Proc. SPIE 5741, Emerging Liquid Crystal Technologies, (12 April 2005); https://doi.org/10.1117/12.593330

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available