Author Affiliations
Abstract
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei
Direct mass spectrometric analysis of complex biological samples is very important and challenging. In this paper, nanodiamonds have been successfully used in matrix-assisted laser desorption/ionization mass spectrometric analysis of human serum and urine. As a practical tool and platform, it can be widely used in the field of humoral proteomics, and it plays a very promising role in clinical diagnosis, including identification of novel disease-associated biomarkers.
质谱 基质辅助激光解吸附电离 纳米钻石 体液分析 170.1610 Clinical applications 140.3450 Laser-induced chemistry 000.1570 Chemistry Chinese Optics Letters
2008, 6(6): 417
Author Affiliations
Abstract
1 Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
2 Graduate School of Chinese Academy of Sciences, Beijing 100039
Theoretical studies on laser gain of a multi-stage dye laser amplifier are presented in this paper. The results show that the influences of amplified spontaneous emission (ASE) and nonlinear absorption of excitedstate on the gain are different for different input laser energies and gains. A threshold input intensity exists for a specific system. If the input intensity is higher than the threshold, the nonlinear absorption of excited-state will be the main cause for gain decrease. Otherwise, the ASE is the main cause. A new scheme is proposed to calculate the gain of the amplifier by the comparison of the input intensity with the effective saturation intensity and the choice of the calculation gain method.
140.3280 laser materials 140.2050 dye lasers Chinese Optics Letters
2003, 1(1): 0134