Abstract

Random lasing in fully disordered systems having organic and inorganic nature has been the subject of extensive studies since the beginning of the past decade. The interest mainly emerges from the unexpected role played by disorder in the laser action. The disorder was considered detrimental for the optical feedback in cavity laser, until it was demonstrated that multiple-scattering materials including a gain medium act as random laser. Here, a completely new approach is reported, where freely suspended complex fluid films doped with fluorescent molecules under optical excitation generate narrowband lasing peaks. The constellation of localized modes is selected by properly choosing the gain profile. The idea to have laser action in absence of mirrors and boundaries realizes an unparalleled tunable and moldable laser source.

© 2008 Optical Society of America

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References

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2006

G. Strangi, S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, and R. Bartolino, Opt. Express 14, 7737 (2006).
[CrossRef] [PubMed]

S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, R. Bartolino, and G. Strangi, Appl. Phys. Lett. 89, 121109 (2006).
[CrossRef]

2004

R. C. Polson and Z. V. Vardeny, Appl. Phys. Lett. 85, 1289 (2004).
[CrossRef]

R. Sapienza, S. Mujumdar, C. Cheung, A. G. Yodh, and D. Wiersma, Phys. Rev. Lett. 92, 033903 (2004).
[CrossRef] [PubMed]

S. Mujumdar, M. Ricci, R. Torre, and D. Wiersma, Phys. Rev. Lett. 93, 053903 (2004).
[CrossRef] [PubMed]

2003

H. Cao, Waves Random Media 13, R1 (2003).
[CrossRef]

2002

X. Jiang and C. M. Soukoulis, Phys. Rev. E 65, 025601 (2002).
[CrossRef]

1999

E. Yariv and R. Reisfeld, Opt. Mater. 13, 49 (1999).
[CrossRef]

1996

H. Stark and T. C. Lubensky, Phys. Rev. Lett. 77, 2229 (1996).
[CrossRef] [PubMed]

D. R. Link, J. E. Maclennan, and N. A. Clark, Phys. Rev. Lett. 77, 2237 (1996).
[CrossRef] [PubMed]

1995

D. S. Wiersma, M. P. van Albada, and A. Lagendijk, Nature 373, 203 (1995).
[CrossRef]

M. Siddique, Li Yang, Q. Z. Wang, and R. R. Alfano, Opt. Commun. 117, 475 (1995).
[CrossRef]

1994

N. M. Lawandy, R. M. Balachandran, S. S. Gomers, and E. Sauvain, Nature 368, 436 (1994).
[CrossRef]

1993

H. K. Vithana, L. Asfaw, and D. L. Johnson, Phys. Rev. Lett. 70, 3561 (1993).
[CrossRef] [PubMed]

1968

V. S. Letokhov, Sov. Phys. JETP 26, 835 (1968).

Appl. Phys. Lett.

R. C. Polson and Z. V. Vardeny, Appl. Phys. Lett. 85, 1289 (2004).
[CrossRef]

S. Ferjani, V. Barna, A. De Luca, C. Versace, N. Scaramuzza, R. Bartolino, and G. Strangi, Appl. Phys. Lett. 89, 121109 (2006).
[CrossRef]

Nature

N. M. Lawandy, R. M. Balachandran, S. S. Gomers, and E. Sauvain, Nature 368, 436 (1994).
[CrossRef]

D. S. Wiersma, M. P. van Albada, and A. Lagendijk, Nature 373, 203 (1995).
[CrossRef]

Opt. Commun.

M. Siddique, Li Yang, Q. Z. Wang, and R. R. Alfano, Opt. Commun. 117, 475 (1995).
[CrossRef]

Opt. Express

Opt. Mater.

E. Yariv and R. Reisfeld, Opt. Mater. 13, 49 (1999).
[CrossRef]

Phys. Rev. E

X. Jiang and C. M. Soukoulis, Phys. Rev. E 65, 025601 (2002).
[CrossRef]

Phys. Rev. Lett.

H. Stark and T. C. Lubensky, Phys. Rev. Lett. 77, 2229 (1996).
[CrossRef] [PubMed]

D. R. Link, J. E. Maclennan, and N. A. Clark, Phys. Rev. Lett. 77, 2237 (1996).
[CrossRef] [PubMed]

H. K. Vithana, L. Asfaw, and D. L. Johnson, Phys. Rev. Lett. 70, 3561 (1993).
[CrossRef] [PubMed]

R. Sapienza, S. Mujumdar, C. Cheung, A. G. Yodh, and D. Wiersma, Phys. Rev. Lett. 92, 033903 (2004).
[CrossRef] [PubMed]

S. Mujumdar, M. Ricci, R. Torre, and D. Wiersma, Phys. Rev. Lett. 93, 053903 (2004).
[CrossRef] [PubMed]

Sov. Phys. JETP

V. S. Letokhov, Sov. Phys. JETP 26, 835 (1968).

Waves Random Media

H. Cao, Waves Random Media 13, R1 (2003).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Experimental setup schematic. Inset, digital photo shows the dye-doped sample freely suspended by means of a squared-comb PVC net.

Fig. 2
Fig. 2

(a) Picture shows the lasing emission spots of the two freely suspended mixture films. (b) Spatial distribution of the lasing peaks, which stochastically changes for each pump pulse.

Fig. 3
Fig. 3

Lasing emission spectra for the liquid crystalline compound (BL001) doped with PM597 and PM650 at a pumping energy of about 3 μ J pulse . For each mixture the fluorescence curves are reported together with the narrowband laser lines (FWHM = 0.6 nm ).

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