Random laser action in semiconductor powder

@article{Cao1999RandomLA,
  title={Random laser action in semiconductor powder},
  author={Hui Cao and Y. G. Zhao and Seng Tiong Ho and E. W. Seelig and Qing Hua Wang and R. P. H. Chang},
  journal={Physical Review Letters},
  year={1999},
  volume={82},
  pages={2278-2281}
}
We report the first observation of random laser action with coherent feedback in semiconductor powder. Since the scattering mean free path is less than the emission wavelength, recurrent light scattering arises and provides coherent feedback for lasing. Discrete lasing modes have been observed above the threshold. The dependence of the lasing threshold intensity on the excitation volume agrees with the random laser theory. Laser emission from the powder could be observed in all directions. This… 
View via Publisher
eng.yale.edu
1,365 Citations
Highly Influential Citations
10
Background Citations
158
Methods Citations
20
Results Citations
4

Figures from this paper

1,365 Citations

Random Laser Action in Weakly Nano-Scattering Solution

We experimentally measured the random laser action which pumped by 355 nm ns laser pulse. We focus on the emission spectra varying with the pump energies and study the lasing threshold of the random…

Random lasers with coherent feedback

We review our recent work on lasing in active random media. Light scattering, which had been regarded as detrimental to lasing action for a long time, actually provided coherent feedback for lasing.…

Random Lasers with Coherent Feedback

We have demonstrated lasing with resonant feedback in active random media. Recurrent light scattering provides coherent feedback for lasing. A detailed experimental study of laser emission spectra,…

Blue-light-emitting ZnSe random laser.

Blue-light-emitting random laser action with coherent feedback in ZnSe particles with broad spontaneous emission band peaking at approximately 470 nm and several discrete lasing lines appear at the center of the spontaneous emissionBand.

Random lasing in Nd:YAG nano-crystalline-powder pumped by laser diode

We demonstrated laser diode pumped quasi-continuous-wave random laser in Nd3+ doped YAG nanopower with a one-mirror structure. Beside usual phenomena associated with laser, like threshold behavior…

Collective behavior and disorder-induced resonator of random lasers

The localization caused by multiple scattering of lightwaves provides a mode for random laser action. It is shown that once the gain surpasses a certain threshold, photons are driven to localized…

Coherent random lasing from liquid waveguide gain channels with biological scatters

A unidirectional coherent random laser based on liquid waveguide gain channels with biological scatters is demonstrated. The optical feedback of the random laser is provided by both light scattering…

Random lasing following two-photon excitation of highly scattering gain media

We present experimental evidence of laser emission following two-photon excitation of dye-infiltrated random gain media with optical properties similar to biological tissue. The excitation was…

Lasing in random media

Abstract A random laser is a non-conventional laser whose feedback mechanism is based on disorder-induced light scattering. Depending on whether the feedback supplied by scattering is intensity…

Universal properties of random lasers

The design and fabrication of laser resonators is often difficult. However, random lasers occur in gain media with numerous scatterers and produce coherent laser emission without any predesigned…
...

References

SHOWING 1-10 OF 15 REFERENCES

and P

    Phys

    • Rev. A 54, 3642
    • 1996

    and Ch

    • M. Briskina, Sov. J. Quantum Electron. 16, 281
    • 1986

    Nature (London) 314

    • 144
    • 1985

    Nature (London) 337

    • 625
    • 1989

    Phys

    • Rev. Lett. 55, 2692
    • 1985

    Nature (London) 368

    • 436
    • 1994

    Phys

    • Rev. A 44, 3948
    • 1991

    Phys

    • Rev. 109, 1492
    • 1958

    Nature (London) 390

    • 671
    • 1997