Capillary discharge soft X-ray lasing in Ne-like Ar pumped by low main current pulses
Tóm tắt
Under the condition of the low main current pulse, the capillary discharge soft X-ray laser is obtained. The laser energy of the same discharge current amplitude at different Ar pressures and of different current amplitudes at the same Ar pressure are compared, respectively. At different Ar pressures, the amplitude of the main current pulse evidently impacts the soft X ray, especially at a pressure higher than 30 Pa. In order to obtain the laser output at a high Ar pressure, the amplitude should be increased. However, at the same Ar pressure, it might have an optimum current, in which case the laser spike is the highest and the most stationary. The laser achieving time at different amplitudes is also discussed. As far as we know, this is the first time the influence of the amplitude of the main current pulse has been analyzed.
Tài liệu tham khảo
J. J. Rocca, D. P. Clark, J. L. A. Chilla, and V. N. Shlyaptsev, “Energy Extraction and Achievement of the Saturation Limit in a Discharge-Pumped Table-Top Soft X-ray Amplifier,” Phys. Rev. Lett. 77, 1476–1479 (1996).
C. D. Macchietto, B. R. Benware, and J. J. Rocca, “Generation of Millijoule-Level Soft X-ray Laser Pulses at a 4-Hz Repetition Rate in a Highly Saturated Tabletop Capillary Discharge Amplifier,” Opt. Lett. 24, 1115–1117 (1999).
T. Makimura, Y. Kenmotsu, H. Miyamoto, et al., “Nanomachining of Inorganic Transparent Materials Using an X-ray Exciton Method,” in Fifth International Symposium on Laser Precision Microfabrication, Proc. SPIE 5662, 107–112 (2004).
N. Izumi, R. Snavely, G. Gregori, et al., “Application of Imaging Plates to X-ray Imaging and Spectroscopy in Laser Plasma Experiments,” Rev. Sci. Instrum. E 77, 325 (2006).
H. Tanaka, K. Akinaga, A. Takahashi, and T. Okada, “Development of EUV Light Source by CO 2 Laser-Produced Xe Plasma,” in Fifth International Symposium on Laser Precision Microfabrication, Proc. SPIE 5662, 361–366 (2004).
C. J. Gaeta, H. Rieger, I. C. E. Turcu, et al., “High-Power Collimated Laser-Plasma Source for Proximity X-ray Nanolithography,” J. Vacuum Sci. Technol. B 21, 280–287 (2003).
A. Ben-Kish, R. A. Nemirovsky, M. Shuker, et al., “Parametric Investigation of Capillary Discharge Experiment for Collisional Excitation X-ray Lasers,” Proc. SPIE 3776, 166–174 (1999).
G. Niimi, Y. Hayashi, M. Nakajima, et al., “Observation of Multi-Pulse Soft X-ray Lasing in a Fast Capillary Discharge,” J. Phys. D 34, 2123–2126 (2001).
G. Tomasseti, A. Ritucci, A. Reale, et al., “Capillary Discharge Soft X-ray Lasing in Ne-Like Ar Pumped by Long Current Pulses,” Eur. Phys. J. D 19, 73–77 (2002).
V. I. Ostashev, A. M. Gafarov, V. Yu. Politov, et al., “Evidence of Soft X-ray Lasing in SIGNAL Pulsed-Power Facility Experiments with Argon Capillary Plasma, IEEE Trans. Plasma Sci. 34, 2368–2376 (2006).
Yongpeng Zhao, Yuanli Chen, Yinchu Wu, et al., “Effects of Capillary Discharge Current on the Time of Lasing onset of Soft X-ray Laser at Low Pressure,” J. Phys. D: Appl. Phys. 39, 342–346 (2006).