TITLE

Microcavity effects and optically pumped lasing in single conjugated polymer nanowires

AUTHOR(S)
O'Carroll, Deirdre; Lieberwirth, Ingo; Redmond, Gareth
PUB. DATE
March 2007
SOURCE
Nature Nanotechnology;Mar2007, Vol. 2 Issue 3, p180
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Conjugated polymers have chemically tuneable opto-electronic properties and are easily processed, making them attractive materials for photonics applications. Conjugated polymer lasers, in a variety of resonator geometries such as microcavity, micro-ring, distributed feedback and photonic bandgap structures, have been fabricated using a range of coating and imprinting techniques. Currently, one-dimensional nanowires are emerging as promising candidates for integrated, subwavelength active and passive photonic devices. We report the first observation of optically pumped lasing in single conjugated polymer nanowires. The waveguide and resonator properties of each wire are characterized in the far optical field at room temperature. The end faces of the nanowire are optically flat and the nanowire acts as a cylindrical optical cavity, exhibiting axial Fabry–Pérot mode structure in the emission spectrum. Above a threshold incident pump energy, the emission spectrum collapses to a single, sharp peak with an instrument-limited line width that is characteristic of single-mode excitonic laser action.
ACCESSION #
24519189

 

Related Articles

  • Fabry-Perot wavelength-stabilization method has ideal error-signal shape.  // Laser Focus World;Aug2004, Vol. 40 Issue 8, p11 

    Reports on National Chiao Tung University researchers' development of a Fabry-Perot wavelength-stabilization method. Error-signal shape; Splitting of the laser beam into two separate beams.

  • Spectral analysis of a three-dimensional photonic quantum ring laser with a square microcavity. Sung-Jae An; Junho Yoon; Jawoong Lee; O'Dae Kwon; Minogin, Vladimir G. // Journal of Applied Physics;2/1/2006, Vol. 99 Issue 3, p033102 

    Three-dimensional photonic quantum ring lasers with a square microcavity were fabricated and their spectra were explained by combining two conditions: the off-normal Fabry-Pérot resonance and quadruple-bounced whispering-gallery mode. The angular distribution of the emission modes and their...

  • Effect of longitudinal flow velocity on the emission spectrum of CO2 lasers. Biswas, D. J.; Nilaya, Padma; Sehgal, S. K.; Chatterjee, U. K. // Journal of Applied Physics;7/15/1994, Vol. 76 Issue 2, p1340 

    Reports on the role of the velocity of flow in the longitudinal direction in determining the rotational emission spectrum of carbon dioxide lasers. Illustration of the fast flow laser; Transmission of the output mirror as a function of wave number; Data on the stationary electric-field wave...

  • Quantum cascade laser intracavity absorption spectrometer for trace gas sensing. Muraviev, A. V.; Maukonen, D. E.; Fredricksen, C. J.; Medhi, Gautam; Peale, R. E. // Applied Physics Letters;8/26/2013, Vol. 103 Issue 9, p091111 

    A mid-infrared intracavity laser absorption spectrometer for trace gas sensing is demonstrated. An external-cavity multi-mode quantum cascade laser with central wavelength 8.0 μm was combined with a scanning Fabry-Perot interferometer, which analyzed the change of the laser emission spectrum...

  • Control of long-term output frequency drift in commercial dye lasers. Lindsay, B. G.; Smith, K. A.; Dunning, F. B. // Review of Scientific Instruments;Jun91, Vol. 62 Issue 6, p1656 

    A simple technique using a scanning confocal Fabry-Perot etalon and a stabilized helium-neon laser is described that can be used to correct the long-term drift in output frequency of actively stabilized commercial dye lasers. Using this technique the long-term drift in the ultraviolet output...

  • Single-Section Fabry-Perot Mode-Locked Semiconductor Lasers. Weiguo Yang // Advances in OptoElectronics;2011, p1 

    We present a review of the theoretical models and experimental verification of the single-section Fabry-Perot mode-locked semiconductor lasers based on multiple-spatial-mode (MSM) coupling. The mode-locked operation at the repetition rates of 40 GHz and higher and the pulse width of a few...

  • Nanofabrication tools promise new laser manufacturing methods. Kwong, Norman; Scherer, Axel // Lightwave;Oct2006, Vol. 23 Issue 10, p1 

    The article discusses the potential application of focused beam ion (FBI) etching to fabricate high-speed, short-cavity lasers. It cites the demonstration of Bellcore Co. scientists on the usage of FBI to develop Fabry-Perot (FP) lasers that could emit output light from wafer surface. It also...

  • Femtosecond laser fabrication of high reflectivity micromirrors. Brodoceanu, D.; Cole, G. D.; Kiesel, N.; Aspelmeyer, M.; Bäuerle, D. // Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p041104 

    High-quality freestanding micromirrors consisting of 40 dielectric layers on silicon have been fabricated by ultrashort-pulse laser ablation in combination with laser-assisted wet chemical etching. Backside material removal enables direct access to both faces of the dielectric coating. The...

  • Use of distributed Bragg reflectors to enhance Fabry-Pérot lasing in vertically aligned ZnO nanowires. Kong, Jieying; Chu, Sheng; Huang, Jian; Olmedo, Mario; Zhou, Weihang; Zhang, Long; Chen, Zhanghai; Liu, Jianlin // Applied Physics A: Materials Science & Processing;Jan2013, Vol. 110 Issue 1, p23 

    An optically pumped ZnO nanowire laser with a 10-period SiO/SiN distributed Bragg reflector (DBR) was demonstrated. Stimulated emissions with equally distributed Fabry-Pérot lasing modes were observed at pumping powers larger than 121 kW/cm. This result, when compared to nanowires of the same...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics