Collisional excitation soft x-ray laser pumped by optical field ionization in a cluster jet

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.061804· OSTI ID:20717859

Chu, H -H ^[1]; Tsai, H -E; Wang, J ^[1]; Chou, M -C ^[1]; Yang, L -S; Chen, S -Y ^[1]; Lin, J -Y ^[2]; Lee, C -H ^[3]

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1. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan (China)
2. Department of Physics, National Chung Cheng University, Chia-Yi 621, Taiwan (China)
3. Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan (China)

An optical-field-ionization soft x-ray laser using a clustered gas jet was demonstrated. Pd-like xenon lasing at 41.8 nm with 95-nJ pulse energy and 5.2-mrad divergence was achieved, indicating near-saturation amplification. By using a prepulse to control the expansion of ionized clusters, it was found that the microscopic uniformity of the plasma is essential for efficient lasing. In addition, the optimal atom density for maximum lasing reported previously is verified to result from the tradeoff between large gain coefficient and short gain length due to ionization-induced refraction.

• OSTI ID: 20717859
• Journal Information: Physical Review. A, Vol. 71, Issue 6; Other Information: DOI: 10.1103/PhysRevA.71.061804; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CONTROL
DENSITY
EXCITATION
GAIN
IONIZATION
LASER-PRODUCED PLASMA
PULSES
REFRACTION
SOFT X RADIATION
X-RAY LASERS
XENON