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Related Experiment Videos

Transform-limited, narrow-linewidth lasing action in organic semiconductor microcavities

Bulovic1, Kozlov, Khalfin

  • 1Center for Photonics and Optoelectronic Materials (POEM), Department of Electrical Engineering and the Princeton Materials Institute, Princeton University, Princeton, NJ 08544, USA.

Science (New York, N.Y.)
|January 28, 1998
PubMed
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Researchers demonstrated lasing in organic vertical-cavity surface-emitting lasers (OVCSELs). These devices emit high-power, narrow-linewidth orange-to-red light from an organic semiconductor, showing potential for future laser applications.

Area of Science:

  • Optoelectronics
  • Organic semiconductor devices
  • Laser physics

Background:

  • Organic vertical-cavity surface-emitting lasers (OVCSELs) offer potential for tunable, low-cost laser sources.
  • Previous research has explored various organic materials for OVCSEL active layers.

Purpose of the Study:

  • To demonstrate lasing action in novel OVCSEL structures.
  • To characterize the optical properties and performance of these OVCSELs.

Main Methods:

  • Fabrication of OVCSELs using tris-(8-hydroxyquinoline) aluminum (Alq3) doped with DCM laser dye as the active layer.
  • Optical pumping of the OVCSEL structures.
  • Measurement of emission linewidth, power, and operational lifetime.

Main Results:

Related Experiment Videos

  • Achieved lasing action with very narrow linewidths (0.2 +/- 0.1 angstrom).
  • Produced high-power (3 watts) emission tunable from orange to red.
  • Demonstrated efficient energy transfer with a low threshold input energy (300 microjoules per square centimeter).
  • Observed an operational lifetime exceeding 10^6 laser pulses in atmospheric conditions.

Conclusions:

  • The demonstrated OVCSELs exhibit excellent optical properties and stability.
  • Efficient energy transfer and tunable emission highlight the potential of doped organic semiconductors in laser applications.
  • Fourier transform-limited linewidths suggest possibilities for further spectral narrowing.