Abstract

A new type of lasing was obtained on the basis of a dye-doped cholesteric liquid crystal laser with transversally distributed excitation. Two coherent beams of the pumping laser formed an interference pattern in the planar dye-doped cholesteric layer and provided laser generation in the separate narrow strips of the pumped area. Each of the strips demonstrated lasing along the cholesteric axis. But, due to the mutual coherence of the separate strips emission, the total picture of lasing represented an interference pattern. Thus, in contrast to the conventional lasers, the intensity distribution in the laser emission pattern had a periodical character similar to diffraction from an elementary dynamic hologram.

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References

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  1. L. S. Goldberg and J. M. Shnur, “Tunable internal-feedback liquid crystal-dye laser,” U.S. patent3,771,065 (November6, 1973).
  2. N. V. Kukhtarev, Sov. J. Quantum Electron. 8, 774 (1978).
    [CrossRef]
  3. I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).
  4. E. Yablonovitch, Phys. Rev. Lett. 58, 2059 (1987).
    [CrossRef]
  5. V. I. Kopp, B. Fan, H. K. M. Vithana, and A. Z. Genack, Opt. Lett. 23, 1707 (1998).
    [CrossRef]
  6. R. J. Collier, B. C. Burckhardt, and H. L. Lin, Optical Holography (Academic, 1971).
  7. M. Born and E. Wolf, Principles of Optics (Pergamon, 1964).

1998 (1)

1987 (1)

E. Yablonovitch, Phys. Rev. Lett. 58, 2059 (1987).
[CrossRef]

1980 (1)

I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).

1978 (1)

N. V. Kukhtarev, Sov. J. Quantum Electron. 8, 774 (1978).
[CrossRef]

Born, M.

M. Born and E. Wolf, Principles of Optics (Pergamon, 1964).

Burckhardt, B. C.

R. J. Collier, B. C. Burckhardt, and H. L. Lin, Optical Holography (Academic, 1971).

Collier, R. J.

R. J. Collier, B. C. Burckhardt, and H. L. Lin, Optical Holography (Academic, 1971).

Fan, B.

Genack, A. Z.

Goldberg, L. S.

L. S. Goldberg and J. M. Shnur, “Tunable internal-feedback liquid crystal-dye laser,” U.S. patent3,771,065 (November6, 1973).

Ilchishin, I. P.

I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).

Kopp, V. I.

Kukhtarev, N. V.

N. V. Kukhtarev, Sov. J. Quantum Electron. 8, 774 (1978).
[CrossRef]

Lin, H. L.

R. J. Collier, B. C. Burckhardt, and H. L. Lin, Optical Holography (Academic, 1971).

Shnur, J. M.

L. S. Goldberg and J. M. Shnur, “Tunable internal-feedback liquid crystal-dye laser,” U.S. patent3,771,065 (November6, 1973).

Spak, M. T.

I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).

Tikhonov, E. A.

I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).

Tishchenko, V. G.

I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).

Vithana, H. K. M.

Wolf, E.

M. Born and E. Wolf, Principles of Optics (Pergamon, 1964).

Yablonovitch, E.

E. Yablonovitch, Phys. Rev. Lett. 58, 2059 (1987).
[CrossRef]

JETP Lett. (1)

I. P. Ilchishin, E. A. Tikhonov, V. G. Tishchenko, and M. T. Spak, JETP Lett. 32, 24 (1980).

Opt. Lett. (1)

Phys. Rev. Lett. (1)

E. Yablonovitch, Phys. Rev. Lett. 58, 2059 (1987).
[CrossRef]

Sov. J. Quantum Electron. (1)

N. V. Kukhtarev, Sov. J. Quantum Electron. 8, 774 (1978).
[CrossRef]

Other (3)

L. S. Goldberg and J. M. Shnur, “Tunable internal-feedback liquid crystal-dye laser,” U.S. patent3,771,065 (November6, 1973).

R. J. Collier, B. C. Burckhardt, and H. L. Lin, Optical Holography (Academic, 1971).

M. Born and E. Wolf, Principles of Optics (Pergamon, 1964).

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Figures (8)

Fig. 1.
Fig. 1.

(a) Conventional DD CLC laser and (b) modified DD CLC laser with double-beam coherent pumping.

Fig. 2.
Fig. 2.

Scheme of double-beam coherent pumping.

Fig. 3.
Fig. 3.

Formation of the pumping interference pattern in the DD CLC layer.

Fig. 4.
Fig. 4.

Transmission spectrum of the DD CLC cell along the cholesteric helical axis.

Fig. 5.
Fig. 5.

Luminescence spectrum of the DD CLC cell.

Fig. 6.
Fig. 6.

Lasing spectrum of the DD CLC cell.

Fig. 7.
Fig. 7.

Photos of the patterns of lasing with double-beam coherent pumping. The convergence angles of the pumping beams are 1.8° (left photo) and 0.6° (right photo). The spatial period of the pumping interference patterns is 17 and 50 μ, respectively.

Fig. 8.
Fig. 8.

Photo of the emission pattern of the laser cell with single-beam pumping.

Equations (2)

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d=λP2sin(θ/2),
ϕ=2arcsin(λL/2d),

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