Geodesic
Shortening of the femtosecond pulse duration during second harmonic generation
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 15 (2022) no. 6, pp. 703-709.

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The results of theoretical and experimental studies aimed at studying the possibility of reducing the second harmonic (SH) pulse duration during its generation under conditions of phase matching violation are presented in this paper. Generation is studied in a nonlinear KDP crystal pumped by transform-limited radiation pulse with a duration of 50 fs at a central wavelength of 950 nm. The efficiency of SH generation and the broadening of its spectrum as a function of the pump pulse energy and phase-matching angle detuning in different regions of the beam cross section are studied. The behavior dynamics of SH spectrum with a change in the phase-matching angle is shown, the optimal detuning angle corresponding to the maximum broadening of SH spectrum is determined. A nonlinear phase shift over SH beam cross section is noted, the sign of which depends on the sign of phase mismatch. The possibility of reducing femtosecond pulse duration by 1.5–1.7 times is shown.
Keywords: second harmonic generation, femtosecond pulse, phase matching angle, spectrum width, pulse duration. 
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Sergey V. Alekseev; Valery F. Losev; Vladimir I. Trunov; Stanislav A. Frolov. Shortening of the femtosecond pulse duration during second harmonic generation. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 15 (2022) no. 6, pp. 703-709. http://geodesic.mathdoc.fr/item/JSFU_2022_15_6_a2/

[1] S.V. Alekseev, A.I. Aristov, N.G. Ivanov, et. all., “Multiterawatt femtosecond laser system in the visible with photochemically driven XeF(C-A) boosting amplifier”, Laser and Particle Beams, 31:1 (2013), 17–21 | DOI

[2] S.V. Alekseev, N.G. Ivanov, V.F. Losev, et. all., “Attainment of a 40 TW peak output power with a visible-range hybrid femtosecond laser system”, Quantum Electronics, 49:10 (2019), 901–904 (in Russian) | DOI

[3] L.D. Mikheev, “Photochemical lasers on electronic molecular transitions”, Quantum Electronics, 32:12 (2002), 1122–1132 (in Russian) | DOI

[4] S. Yu.Mironov, V.N. Ginzburg, V.V. Lozhkarev, et.all., “Highly efficient second-harmonic generation of intense femtosecond pulses with a significant effect of cubic nonlinearity”, Quantum Electronics, 41:11 (2011), 963–967 (in Russian) | DOI

[5] N.V. Didenko, A.V. Konyashchenko, L.L. Losev, et.all., “Femtosecond pulse compression based on second harmonic generation from a frequency chirped pulse”, Optics Communications, 282:5 (2009), 997–999 | DOI

[6] S.V. Alekseev, N.G. Ivanov, V.F. Losev, “Spectral contour broadening upon the generation of the second harmonic”, Bulletin of the Russian Academy of Sciences: Physics, 84:7 (2020), 751–754 | DOI

[7] G.I. Stegeman, D.J. Hagan, L. Torner, “$\chi (2)$ cascading phenomena and their applications to all-optical signal processing, mode-locking, pulse compression and solitons”, Optical and Quantum electronics, 28:12 (1996), 1691–1740

[8] S.A. Frolov, V.I. Trunov, S.N. Bagayev, “Generation of few-cycle pulses in media with alternating sign of effective cubic nonlinearity”, Quantum Electronics, 50:4 (2020), 343–349 (in Russian) | DOI

[9] A. Umbrasas, et all., “Generation of femtosecond pulses through second-harmonic compression of the output of a Nd: YAG laser”, Optics letters, 20:21 (1995), 2228–2230