Dynamic-grating-assisted energy transfer between ultrashort laser pulses in lithium niobate

Autor(en): Nolte, Stefan
Bourdon, Bjoern
Freytag, Felix
Imlau, Mirco 
Shumelyuk, Alexandr
Odoulov, Serguey
Stichwörter: FEMTOSECOND; HOLOGRAPHY; NONLINEAR ABSORPTION; Optics; RAMAN; SCATTERING
Erscheinungsdatum: 2018
Herausgeber: OPTICAL SOC AMER
Journal: OPTICS EXPRESS
Volumen: 26
Ausgabe: 17
Startseite: 21558
Seitenende: 21573
Zusammenfassung: 
Energy redistribution between two subpicosecond laser pulses of 2.5 eV photon energy is observed and studied in congruent, nominally undoped LiNbO3, aiming to reveal the underlying coupling mechanisms. The dependences of pulse amplification on intensity, frequency detuning and pulse duration point to two different contributions of coupling, both based on self-diffraction from a recorded dynamic grating. The first one is caused by a difference in pulse intensities (transient energy transfer) while the second one originates from a difference in pulse frequencies. The latter appears when chirped pulses are mutually delayed in time. A quite high coupling efficiency has been observed in a 280 mu m thin crystal: one order of magnitude energy amplification of a weak pulse and nearly 10% net energy enhancement of one pulse for the case of equal input intensities. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
ISSN: 10944087
DOI: 10.1364/OE.26.021558

Show full item record

Google ScholarTM

Check

Altmetric