Frequency-tunable UV laser system for biological and chemical detection

1996 ◽  
Author(s):  
James E. Gorda ◽  
Eric D. Park ◽  
Martin C. Richardson ◽  
Jay A. Fox ◽  
Cynthia R. Swim
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
D. Winzen ◽  
V. Hannen ◽  
M. Bussmann ◽  
A. Buß ◽  
C. Egelkamp ◽  
...  

AbstractThe $$^2{\mathrm{S}}_{1/2}{-}^2{\mathrm{P}}_{{1}/2}$$ 2 S 1 / 2 - 2 P 1 / 2 and $$^2{\mathrm{S}}_{1/2}{-}^2{\mathrm{P}}_{{3}/2}$$ 2 S 1 / 2 - 2 P 3 / 2 transitions in Li-like carbon ions stored and cooled at a velocity of $$\beta \approx 0.47$$ β ≈ 0.47 in the experimental storage ring (ESR) at the GSI Helmholtz Centre in Darmstadt have been investigated in a laser spectroscopy experiment. Resonance wavelengths were obtained using a new continuous-wave UV laser system and a novel extreme UV (XUV) detection system to detect forward emitted fluorescence photons. The results obtained for the two transitions are compared to existing experimental and theoretical data. A discrepancy found in an earlier laser spectroscopy measurement at the ESR with results from plasma spectroscopy and interferometry has been resolved and agreement between experiment and theory is confirmed.


2016 ◽  
Vol 38 ◽  
pp. 107-113 ◽  
Author(s):  
Kwang-Ryul Kim ◽  
Jae-Hee Cho ◽  
Na-Young Lee ◽  
Hyun-Jin Kim ◽  
Sung-Hak Cho ◽  
...  

2009 ◽  
Author(s):  
Junewen Chen ◽  
Jung-Chao Chen ◽  
Shu-Yuan Lin ◽  
Chia-Hao Yeh ◽  
Chin-Yi Liu

2020 ◽  
Vol 17 (12) ◽  
pp. 125501
Author(s):  
Mikhail Aksenov ◽  
Ilia Zalivako ◽  
Nikita Semenin ◽  
Vasilii Smirnov ◽  
Igor Zhuravlev ◽  
...  
Keyword(s):  

2016 ◽  
Author(s):  
Norman Ruhnke ◽  
André Müller ◽  
Bernd Eppich ◽  
Reiner Güther ◽  
Martin Maiwald ◽  
...  

2014 ◽  
Vol 939 ◽  
pp. 230-236
Author(s):  
Chien Kai Chung ◽  
Wen Tse Hsaio ◽  
Shih Feng Tseng ◽  
Kuo Cheng Huang ◽  
Ming Fei Chen

Polymethylmethacrylate (PMMA) material has excellent characteristics, such as being light weight, low cost, ease of machining, and optical quality, which are useful in numerous applications such as backlit LCD display panels, lens optics, and other photoelectric fields. Laser machining of polymerization material results in a superior machining quality, high accuracy, high speed, and high reproducibility, produces a small variety of products, reduces mold costs, and enables the rapid manufacture of products based on complex graphics by processing different depths and widths of the 3D structure. This paper presents the fabrication of symmetrical array microstructures on PMMA material by using a UV laser system. The PMMA material dimensions and thickness were 20 x 20 mm and 1 mm, respectively. Regarding the machining quality, the laser pulse energy, pulse repetition frequency, and fill spacing were adjusted. For the experiments, a semiconductor laser source (635 nm/5 mW/TEM00) and a beam profiler were used to measure the characteristics of a laser beam passing through the microstructures. The microstructure pitches and morphologies also affected the light uniformity. After laser machining, the surface morphology and the light transmittance were measured using a spectrophotometer.


2016 ◽  
Vol 46 (12) ◽  
pp. 1149-1153 ◽  
Author(s):  
A V Ovchinnikov ◽  
O V Chefonov ◽  
V Ya Molchanov ◽  
K B Yushkov ◽  
C Vicario ◽  
...  

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