Partially conjugated poly(phenylenevinylene) as a blue-emitting laser medium: the suppression of stimulated emission due to chain aggregates

M. Fakis; I. Polyzos; G. Tsigaridas; V. Giannetas; Peter Persephonis; I. Spiliopoulos; J. Mikroyannidis

doi:10.1117/12.513686

9 April 2003 Partially conjugated poly(phenylenevinylene) as a blue-emitting laser medium: the suppression of stimulated emission due to chain aggregates

M. Fakis, I. Polyzos, G. Tsigaridas, V. Giannetas, Peter Persephonis, I. Spiliopoulos, J. Mikroyannidis

Author Affiliations +

Proceedings Volume 5131, Third GR-I International Conference on New Laser Technologies and Applications; (2003) https://doi.org/10.1117/12.513686
Event: Third GR-I International Conference on New Laser Technologies and Applications, 2003, San Diego, CA, United States

Abstract

A new blue emitting conjugated polymer is studied for Amplified Spontaneous Emission (ASE) and laser action in liquid solutions and solid matrices. Both processes were observed simultaneously when the liquid polymeric sample is placed into a resonator consisting of a mirror and a grating. This observation permits the distinguishing between the main differences of ASE and laser action such as tunability and coherence. The stimulated emission efficiency can be strongly affected by the presence of polymer chain aggregates into the sample. In order to study this effect mixtures of the polymer with good and poor liquid solvents were prepared and the ASE action was examined. The polymer molecules tend to aggregate when they approach the poor solvent molecules. Thus, by varying the poor solvent quantity into the liquid samples, the aggregates concentration can be systematically controlled. It is shown that the ASE behavior exhibits a rapid suppress with the aggregates concentration. Performing spectroscopic and stimulated emission cross section measurements in isolated and aggregated polymer solutions, it is proved that in the latter media ASE is caused by the intrachain excitons while the spontaneous emission is caused by the aggregates. The suppress of the ASE is due to the increase of aggregates at the expense of isolated chains.

Citation Download Citation

M. Fakis, I. Polyzos, G. Tsigaridas, V. Giannetas, Peter Persephonis, I. Spiliopoulos, and J. Mikroyannidis "Partially conjugated poly(phenylenevinylene) as a blue-emitting laser medium: the suppression of stimulated emission due to chain aggregates", Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); https://doi.org/10.1117/12.513686

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Polymers

Liquids

Molecular aggregates

Molecules

Solids

Excitons

Photons

Show All Keywords

Keywords/Phrases

Search In:

Publication Years