title: Two-dimensional electronic spectroscopy in the ultraviolet by a birefringent delay line.
abstract: We introduce a 2D electronic spectroscopy setup in the UV spectral range in the partially collinear pump-probe geometry. The required interferometrically phase-locked few-optical-cycle UV pulse pair is generated by combining a passive birefringent interferometer in the visible and nonlinear phase transfer. This is achieved by sum-frequency generation between the phase-locked visible pulse pair and narrowband infrared pulses. We demonstrate a pair of 16-fs, 330-nm pulses whose delay is interferometrically stable with an accuracy better than λ/450. 2DUV maps of pyrene solution probed in the UV and visible spectral ranges are demonstrated.
authors.forename: Rocio
authors.initials: R
authors.lastname: Borrego-Varillas
authors.forename: Aurelio
authors.initials: A
authors.lastname: Oriana
authors.forename: Lucia
authors.initials: L
authors.lastname: Ganzer
authors.forename: Anton
authors.initials: A
authors.lastname: Trifonov
authors.forename: Ivan
authors.initials: I
authors.lastname: Buchvarov
authors.forename: Cristian
authors.initials: C
authors.lastname: Manzoni
authors.forename: Giulio
authors.initials: G
authors.lastname: Cerullo