Development of an optical time-resolved measurement system under high-pressure and low-temperature with a piston-cylinder pressure cell

作者：Tsuchiya Satoshi^*; Kino Yohei; Nakagawa Koichi; Nakagawa Daisuke; Yamada Jun ichi; Toda Yasunori

来源：Review of Scientific Instruments, 2016, 87(4): 043104.

DOI：10.1063/1.4945303

To perform the femtosecond pump-probe spectroscopy under high pressure and low temperature, we constructed a measurement system with a piston cylinder type pressure cell installing an optical fiber bundle. The applied pressure was achieved to 6 kbar and the cell was cooled down to 15 K. Several demonstrations revealed that broadening and change of polarization of pulse (duration of similar to 120 fs) owing to the dispersions in the fiber bundle are much small indicating that those have little influence on the measurement of carrier relaxation dynamics. In the measurements of kappa-(BEDT-TTF)(2)Cu(NCS)(2) under 1.3 kbar at 43 K, we have successfully detected the polarization anisotropy of the carrier relaxation dynamics and estimated the decay time in the same way as the normal measurement.

• 出版日期2016-4