Abstract

In this paper we propose a very simple layout of multi-shot second-harmonic-generation (SHG) frequency-resolved optical gating (FROG) using three reflective Dammann gratings (Dammann SHG-FROG) for characterization of the ultrashort optical pulses. One reflective Dammann gratings is used as the beamsplitter and the other two compensate the angular dispersion. Both theoretical and experimental results show that the distortions of the optical pulses introduced by the reflective Dammann gratings are very small. This device should be highly interesting for characterizing the ultrashort pulse.

© 2005 Optical Society of America

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References

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Appl. Opt.

IEEE JQE

E. B. Treacy, �??Optical pulse compression with diffraction gratings,�?? IEEE JQE 5, 454�??458 (1969).
[CrossRef]

J. Opt. A: Pure Appl. Opt.

Günter Steinmeyer, �??A review of ultrafast optics and optoelectronics,�?? J. Opt. A: Pure Appl. Opt. 5, R1�??R15, (2003)
[CrossRef]

J. Opt. Soc. Am. A

J. Opt. Soc. Am. B

Opt Lett.

Donald O'Shea, Mark Kimmel, Patrick O'Shea, Rick Trebino �??Ultrashort-laser-pulse measurement using swept beams,�?? Opt Lett 26, 1442-1444, (2001)
[CrossRef]

Opt. Acta

H. Dammann and E. Klotz, �??Coherent optical generation and inspection of two-dimensional periodic structures,�?? Opt. Acta 24, 505�??515 (1977).
[CrossRef]

Opt. Express

Opt. Lett.

Other

R. Trebino, �??Frequency-Resolved Optical Gating: The Measurement of Ultrashort Laser Pulses,�?? Kluwer Academic Publishers, (2002).

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Figures (4)

Fig. 1.
Fig. 1.

Side (a) and top view (b) of DG FROG

Fig. 2.
Fig. 2.

Diffraction efficiency profile as a function of wavelength of +1 and -1 order of the Dammann grating.

Fig. 3.
Fig. 3.

Lateral displacement due to the movement of the compensation DG

Fig. 4.
Fig. 4.

Comparisons of Dammann SHG-FROG and standard multishot FROG measurements of the input pulses. (a) measured and (b) retrieved Dammann SHG-FROG traces for a chirped pulse; (c) and (d) are the measured and retrieved standard multishot traces for the same chirped pulse; (e) and (f) are the retrieved intensities and phases for the time and frequency domains, respectively. (g)–(l) is the same as (a)–(f) but for a double-chirped pulses of two chirped pulses separated by about two pulse width.

Equations (5)

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η = I + 1 I input = I 1 I input = 4 π 2 sin 2 2 π λ h ,
d λ dx = d L
d λ dx = λ c σ b
τ = τ 0 2 + ( 2 k β 2 L ) 2 τ 0 2 ,
τ = τ 0 2 + [ σ b λ c 2 ( π c 2 d ) ] 2 τ 0 2

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