We developed a digital optical phase locking loop (OPLL) with three advantages, including high precision of phase locking, high control bandwidth up to 2.8 MHz, and automatic laser locking strategy. Spaceborne laser interferometers will be used to measure tiny displacements caused by gravitational waves in millions of kilometers range.
View Article and Find Full Text PDFElectromagn Biol Med
December 2011
Male Sprague Dawley rats were exposed to EMP irradiation of 100 kV/m peak-to-peak e-field intensity and different numbers of pulses. Rat sperm samples were prepared for analysis of sperm qualities; Testes were assessed by transmission electron microscopy and serum hormone concentrations were examined by radioimmunoassay; Enzymatic activities of Total-superoxide dismutase(T-SOD) and manganese-superoxide dismutase (MnSOD), the mRNA levels of MnSOD and cuprozinc-superoxide dismutase (CuZnSOD), and the density of malondialdehyde (MDA) were also determined. EMP irradiation did not affect spermatozoon morphology, micronucleus formation rate, sperm number or viability, but the acrosin reaction rate decreased at 24 h and 48 h and recovered by 72 h after irradiation as compared to the controls.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
December 2008
An experimental study on Raman spectroscopy of normal murine skin and the skin irradiated by high power millimeter wave (HPMM) is presented. It is showed that the Raman spectra of normal skin mainly originate from collagen, and the characteristic peaks are 857, 936 and 1 658 cm(-1). The result showed that after irradiation by HPMM, the relative intensity of the characteristic peaks at 857 and 936 cm(-1) of Raman spectra was decreased.
View Article and Find Full Text PDFGuang Pu Xue Yu Guang Pu Fen Xi
December 2002