Abstract

A stable and compact experimental setup for excitation and investigation of large-wave-vector dynamic gratings by ultrashort light pulses is proposed. Its essential parts are an optical transmission diffraction grating and a large-aperture reflecting microscope objective. Varying the demagnification allows one to change the period of the dynamic grating that is created. The working principle and performance are demonstrated by measurement of the dephasing times of TO phonon–polaritons in GaP. The lower limits of the applicable pump pulse duration are analyzed by ray-tracing calculation.

© 2000 Optical Society of America

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References

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  1. H. J. Eichler, P. Günter, and D. W. Pohl, Laser Induced Dynamic Gratings (Springer-Verlag, Berlin, 1986).
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    [CrossRef]
  3. Zs. Bor and B. Rácz, “Group velocity dispersion in prisms and its application to pulse compression and travelling-wave excitation schemes for ultrashort pulses,” Opt. Commun. 54, 165–169 (1985).
    [CrossRef]
  4. O. E. Martinez, “Pulse distortions in tilted pulses,” Opt. Commun. 59, 229–232 (1986).
    [CrossRef]
  5. J. Hebling, “Derivation of the pulse front tilt caused by angular dispersion,” Opt. Quantum Electron. 28, 1759–1763 (1996).
    [CrossRef]
  6. S. Szatmári and F. P. Schaefer, “Subpicosecond, widely tunable distributed feedback dye laser,” Appl. Phys. B 46, 305–311 (1988).
    [CrossRef]
  7. C. R. Burch, “Semi-aplanat reflecting microscopes,” Proc. Phys. Soc. London 59, 47–49 (1947).
    [CrossRef]
  8. Y. Yan and K. A. Nelson, “Impulsive stimulated light scattering. I. General theory,” J. Chem. Phys. 87, 6240–6265 (1987).
    [CrossRef]
  9. P. Vöhringer and N. F. Scherer, “Transient-grating optical heterodyne detected impulsive stimulated Raman scattering in simple liquids,” J. Phys. Chem. 99, 2684–2695 (1995).
    [CrossRef]
  10. G. D. Goodno, G. Dadusc, and R. J. D. Miller, “Ultrafast heterodyne-detected transient-grating spectroscopy using diffractive optics,” J. Opt. Soc. Am. B 15, 1791–1794 (1998).
    [CrossRef]
  11. A. A. Maznev, K. A. Nelson, and J. A. Rogers, “Optical heterodyne detection of laser-induced gratings,” Opt. Lett. 23, 1319–1321 (1998).
    [CrossRef]

1998

1996

J. Hebling, “Derivation of the pulse front tilt caused by angular dispersion,” Opt. Quantum Electron. 28, 1759–1763 (1996).
[CrossRef]

1995

P. Vöhringer and N. F. Scherer, “Transient-grating optical heterodyne detected impulsive stimulated Raman scattering in simple liquids,” J. Phys. Chem. 99, 2684–2695 (1995).
[CrossRef]

1988

S. Szatmári and F. P. Schaefer, “Subpicosecond, widely tunable distributed feedback dye laser,” Appl. Phys. B 46, 305–311 (1988).
[CrossRef]

1987

Y. Yan and K. A. Nelson, “Impulsive stimulated light scattering. I. General theory,” J. Chem. Phys. 87, 6240–6265 (1987).
[CrossRef]

1986

O. E. Martinez, “Pulse distortions in tilted pulses,” Opt. Commun. 59, 229–232 (1986).
[CrossRef]

1985

Zs. Bor and B. Rácz, “Group velocity dispersion in prisms and its application to pulse compression and travelling-wave excitation schemes for ultrashort pulses,” Opt. Commun. 54, 165–169 (1985).
[CrossRef]

1947

C. R. Burch, “Semi-aplanat reflecting microscopes,” Proc. Phys. Soc. London 59, 47–49 (1947).
[CrossRef]

Bor, Zs.

Zs. Bor and B. Rácz, “Group velocity dispersion in prisms and its application to pulse compression and travelling-wave excitation schemes for ultrashort pulses,” Opt. Commun. 54, 165–169 (1985).
[CrossRef]

Burch, C. R.

C. R. Burch, “Semi-aplanat reflecting microscopes,” Proc. Phys. Soc. London 59, 47–49 (1947).
[CrossRef]

Crimmins, T. F.

Dadusc, G.

Goodno, G. D.

Hebling, J.

J. Hebling, “Derivation of the pulse front tilt caused by angular dispersion,” Opt. Quantum Electron. 28, 1759–1763 (1996).
[CrossRef]

Martinez, O. E.

O. E. Martinez, “Pulse distortions in tilted pulses,” Opt. Commun. 59, 229–232 (1986).
[CrossRef]

Maznev, A. A.

Miller, R. J. D.

Nelson, K. A.

Rácz, B.

Zs. Bor and B. Rácz, “Group velocity dispersion in prisms and its application to pulse compression and travelling-wave excitation schemes for ultrashort pulses,” Opt. Commun. 54, 165–169 (1985).
[CrossRef]

Rogers, J. A.

Schaefer, F. P.

S. Szatmári and F. P. Schaefer, “Subpicosecond, widely tunable distributed feedback dye laser,” Appl. Phys. B 46, 305–311 (1988).
[CrossRef]

Scherer, N. F.

P. Vöhringer and N. F. Scherer, “Transient-grating optical heterodyne detected impulsive stimulated Raman scattering in simple liquids,” J. Phys. Chem. 99, 2684–2695 (1995).
[CrossRef]

Szatmári, S.

S. Szatmári and F. P. Schaefer, “Subpicosecond, widely tunable distributed feedback dye laser,” Appl. Phys. B 46, 305–311 (1988).
[CrossRef]

Vöhringer, P.

P. Vöhringer and N. F. Scherer, “Transient-grating optical heterodyne detected impulsive stimulated Raman scattering in simple liquids,” J. Phys. Chem. 99, 2684–2695 (1995).
[CrossRef]

Yan, Y.

Y. Yan and K. A. Nelson, “Impulsive stimulated light scattering. I. General theory,” J. Chem. Phys. 87, 6240–6265 (1987).
[CrossRef]

Appl. Phys. B

S. Szatmári and F. P. Schaefer, “Subpicosecond, widely tunable distributed feedback dye laser,” Appl. Phys. B 46, 305–311 (1988).
[CrossRef]

J. Chem. Phys.

Y. Yan and K. A. Nelson, “Impulsive stimulated light scattering. I. General theory,” J. Chem. Phys. 87, 6240–6265 (1987).
[CrossRef]

J. Opt. Soc. Am. B

J. Phys. Chem.

P. Vöhringer and N. F. Scherer, “Transient-grating optical heterodyne detected impulsive stimulated Raman scattering in simple liquids,” J. Phys. Chem. 99, 2684–2695 (1995).
[CrossRef]

Opt. Commun.

Zs. Bor and B. Rácz, “Group velocity dispersion in prisms and its application to pulse compression and travelling-wave excitation schemes for ultrashort pulses,” Opt. Commun. 54, 165–169 (1985).
[CrossRef]

O. E. Martinez, “Pulse distortions in tilted pulses,” Opt. Commun. 59, 229–232 (1986).
[CrossRef]

Opt. Lett.

Opt. Quantum Electron.

J. Hebling, “Derivation of the pulse front tilt caused by angular dispersion,” Opt. Quantum Electron. 28, 1759–1763 (1996).
[CrossRef]

Proc. Phys. Soc. London

C. R. Burch, “Semi-aplanat reflecting microscopes,” Proc. Phys. Soc. London 59, 47–49 (1947).
[CrossRef]

Other

H. J. Eichler, P. Günter, and D. W. Pohl, Laser Induced Dynamic Gratings (Springer-Verlag, Berlin, 1986).

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Figures (3)

Fig. 1
Fig. 1

Experimental setup for excitation of transient gratings.

Fig. 2
Fig. 2

Diffracted ISRS signal for a (110) GaP crystal as a function of the time delay between the pump pulses and the probe pulse.

Fig. 3
Fig. 3

Calculated group delay (τ) for imaging of the transmission grating by the reflecting microscope objective as a function of distance from the center of the imaged area. The curves depict τ (b) at the image plane and (a) 60 µm before and (c) 60 µm behind the image plane in the GaP crystal.

Equations (2)

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Λ=12 f2f1Λg,
τ=1c L-λ dLdλ,

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