A New Era for Ultrafast Photonics: Two-Dimensional Mercury-Acetylide Frameworks for Near-Infrared Nonlinear Optics (IMAGE)
Caption
(a) Absorption spectra of the Hg–H2TPP, H2TPP and IPA solution; inset shows an expanded region of the spectrum from 480 to 910 nm. (b) Photoluminescence spectra of exfoliated Hg–H2TPP and H2TPP samples, excited with two solid-state lasers at wavelengths of 488 nm (solid lines) and 552 nm (dashed lines). (c) Spectrally resolved TA signal for different delay times ranging from 20 fs to 106 ps; data for the wavelength range 1180–1220 nm is not provided due to irregular absorption by the solvent. (d) TA dynamics for two distinctive probe wavelengths; the inset dashed rectangular box shows the 2D color-coded map of TA spectra, where the horizontal axis, vertical axis, and color scale represent the probe wavelength (820–1500 nm), the pump-probe delay (0.1–1500 ps), and the strength of the TA signal, respectively. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)
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