Terahertz Absorption Properties of Two Solid Amino Acids and Their Aqueous Solutions

Table 1

Terahertz (THz) time domain spectral information.

Primary unit	Brand	Performance parameters
Femtosecond laser	Self-mode-locking fibre femtosecond laser independently developed and customised by Peking University	The central wavelength was 1550 nm, the pulse width was 75 fs, the pulse power was 130 mW, and the pulse repetition frequency was 100 MHz
THz-generating device	BATOP company	bPCA-100-05-10-1550-c-f
Time delay device	Electric translation table produced by Daheng Photoelectric Co., Ltd.	This device can achieve detection with a step size of 0.02 mm, and a total of 200 data points can be recorded
THz radiation detection device	BATOP company	bPCA-180-05-10-1550-c-f