Ms. Ilene Allison Profile

Ilene Allison

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 30 May 2022 Presentation

Low-threshold polariton lasing in fluorene-based oligomers

Graham Turnbull, Mengjie Wei, Arvydas Ruseckas, Van T. Mai, Atul Shukla, Ilene Allison, Shih-Chun Lo, Ebinazar Namdas, Ifor D. Samuel

Proceedings Volume PC12149, PC121490V (2022) https://doi.org/10.1117/12.2621585

KEYWORDS: Polaritons, Optical microcavities, Laser damage threshold, Photons, Excitons, Organic semiconductors, Superposition, Semiconductors, Semiconductor lasers, Quasiparticles

Read Abstract +

Strong light-matter interactions in optical microcavities can form exciton-polaritons – a superposition state of photons and excitons. Above a threshold excitation density, these bosonic quasiparticles can condense into the lowest energy state as a polariton laser. This does not require population inversion and so offers potential to generate coherent light with very low threshold. Organic semiconductors are attractive materials for microcavity polaritons due to their high exciton binding energy and oscillator strength. It is well reported in inorganic semiconductor microcavities that the threshold for polariton lasing is lower than that for conventional photon lasing. However, polariton lasing thresholds in organic semiconductors are relatively higher than organic photon lasers. Here, we present a study of strong coupling and polariton lasing in highly soluble fluorene-carbazolylstyryl materials, which exhibit high absorption coefficients, PLQY and radiative rates. We observe polariton lasing under 100 fs optical pumping, with absorbed pump threshold densities as low as 2.2 µJ/cm2. This is the lowest threshold reported to date for polariton lasing in organic microcavities, and comparable to state-of-the-art organic cavity surface-emitting lasers. A step-like blueshift at polariton lasing threshold indicates the interplay between different exciton depletion channels. Our study also provides insight to the design principles for an optimal polariton lasing threshold. Through a comparison of the photophysics and polariton laser performance of these materials with those of other reported polariton lasers, we identify key materials and cavity properties required for further development of low threshold organic polariton lasers.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years