Wide spectral range ultrafast pump-probe magneto-optical spectrometer at low temperature, high-magnetic and electric fields.
Wide spectral range ultrafast pump-probe magneto-optical spectrometer at low temperature, high-magnetic and electric fields.
复制标题
低温、高磁场和电场下的宽光谱范围超快泵浦探针磁光光谱仪。
DOI：
10.1063/5.0024449
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
M. Cinchetti
中科院分区：
文献类型：
--
作者：
F. Mertens;M. Terschanski;D. Mönkebüscher;S. Ponzoni;D. Bossini;M. Cinchetti
我们开发了一个桌面设置，以执行磁光泵浦探测测量的可能性，独立调谐的泵浦和探测光束在0.5 eV-3.5 eV的范围内的光子能量。我们的设备依赖于一个商业交钥匙放大激光系统，能够产生持续时间短于或相当于100 fs的整个光谱范围内的光脉冲。源的重复频率可以通过计算机在1 kHz至1 MHz范围内进行修改。商用平衡检测器连接到高频数字转换器，允许高灵敏度检测方案：可以测量小至70 μdeg的探针偏振旋转。此外，可以在样品上施加高达9 T的DC磁场和kV范围的电压。低温恒温器使我们能够在4 K-420 K的区间内精确地设置样品的温度。我们证明了我们的设置的性能，通过测量作为各种各样的实验参数的函数的钴晶体的超快退磁。
We developed a table-top setup to perform magneto-optical pump-probe measurements with the possibility to independently tune the photon-energy of both pump and probe beams in the 0.5 eV-3.5 eV range. Our apparatus relies on a commercial turn-key amplified laser system, able to generate light pulses with duration shorter than or comparable to 100 fs throughout the whole spectral range. The repetition rate of the source can be modified via the computer in the 1 kHz to 1 MHz range. A commercial balanced detector is connected to a high-frequency digitizer, allowing for a highly-sensitive detection scheme: rotations of the probe polarization as small as 70 μdeg can be measured. Additionally, a DC magnetic field as high as 9 T and voltages in the kV regime can be applied on the sample. A cryostat allows us to precisely set the temperature of the specimen in the 4 K-420 K interval. We prove the performance of our setup by measuring the ultrafast demagnetization of a cobalt crystal as a function of a wide variety of experimental parameters.
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影响因子：
12.5
作者：
Roth, T.;Schellekens, A. J.;Aeschlimann, M.
通讯作者：
Aeschlimann, M.
影响因子：
64.8
作者：
Mitrano M;Cantaluppi A;Nicoletti D;Kaiser S;Perucchi A;Lupi S;Di Pietro P;Pontiroli D;Riccò M;Clark SR;Jaksch D;Cavalleri A
通讯作者：
Cavalleri A
影响因子：
35
作者：
Kampfrath, Tobias;Sell, Alexander;Huber, Rupert
通讯作者：
Huber, Rupert
影响因子：
64.8
作者：
Schlauderer, S.;Lange, C.;Huber, R.
通讯作者：
Huber, R.