Abstract
Pumping of proposed inner-shell photo-ionized (ISPI) x-ray lasers places stringent requirements on the optical pump source. We investigate these requirements for an example x-ray laser (XRL) in Carbon lasing on the 2p - 1s transition at 45 Å. Competing with this lasing transition is the very fast auger decay rate out of the upper lasing state, such that the x-ray laser would self-terminate on a femto-second time scale. XRL gain may be demonstrated if pump energy is delivered in a time short when compared to the auger rate. The fast self-termination also demands that we sequentially pump the length of the x-ray laser at the group velocity of the x- ray laser. This is the classical traveling wave requirement. It imposes a condition on the pumping source that the phase angle of the pump laser be precisely de-coupled from the pulse front angle. At high light intensities, this must be performed with a vacuum grating delay line. We also include a discussion of issues related to pump energy delivery, i.e. pulse-front curvature, temporal blurring and pulse fidelity. An all- reflective optical system with low aberration is investigated to see if it fulfills the requirements. It is expected that these designs together with new high energy (>1J) ultra-short pulse (<40 fs) pump lasers now under construction, may fulfill our pump energy conditions and produce a tabletop x-ray laser.
Original language | English (US) |
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Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
Pages | 109-113 |
Number of pages | 5 |
Volume | 3156 |
DOIs | |
State | Published - 1997 |
Externally published | Yes |
Event | Soft X-Ray Lasers and Applications II - San Diego, CA, United States Duration: Jul 28 1997 → Jul 28 1997 |
Other
Other | Soft X-Ray Lasers and Applications II |
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Country/Territory | United States |
City | San Diego, CA |
Period | 7/28/97 → 7/28/97 |
Keywords
- Reflective optics
- Ultra-short pulse
- X-ray laser
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics