A versatile setup for ultrafast broadband optical spectroscopy of coherent collective modes in strongly correlated quantum systems

被引：8

作者：

Baldini, Edoardo ^{[1
,2
]}

Mann, Andreas ^{[1
,2
]}

Borroni, Simone ^{[1
,2
]}

Arrell, Christopher ^{[3
,4
]}

van Mourik, Frank ^{[3
,4
]}

Carbone, Fabrizio ^{[1
,2
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Ultrafast Microscopy & Electron Scattering, IPHYS, Stn 6, CH-1015 Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, Lausanne Ctr Ultrafast Sci, IPHYS, Stn 6, CH-1015 Lausanne, Switzerland

[3] Ecole Polytech Fed Lausanne, Lab Ultrafast Spect, ISIC, Stn 6, CH-1015 Lausanne, Switzerland

[4] Ecole Polytech Fed Lausanne, Lausanne Ctr Ultrafast Sci, ISIC, Stn 6, CH-1015 Lausanne, Switzerland

来源：

STRUCTURAL DYNAMICS-US | 2016年 / 3卷 / 06期

关键词：

ELECTRON-PHONON INTERACTION; QUASI-PARTICLES; FEMTOSECOND; EXCITATION; SNAPSHOTS; DYNAMICS; CUPRATE;

D O I：

10.1063/1.4971182

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A femtosecond pump-probe setup is described that is optimised for broadband transient reflectivity experiments on solid samples over a wide temperature range. By combining high temporal resolution and a broad detection window, this apparatus can investigate the interplay between coherent collective modes and high-energy electronic excitations, which is a distinctive characteristic of correlated electron systems. Using a single-shot readout array detector at frame rates of 10 kHz allows resolving coherent oscillations with amplitudes <10(-4). We demonstrate its operation on the charge-transfer insulator La2CuO4, revealing coherent phonons with frequencies up to 13 THz and providing access into their Raman matrix elements. (C) 2016 Author(s).

引用

页数：11

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