These proceedings comprise invited and contributed papers presented at the 14th International Conference on X-Ray Lasers (ICXRL 2014). This conference is part of a continuing series dedicated to recent developments and applications of x-ray lasers and other coherent x-ray sources with attention to supporting technologies and instrumentation.

New results in the generation of intense, coherent x-rays and progress toward practical devices and their applications in numerous fields are reported. Areas of research in plasma-based x-ray lasers, 4th generation accelerator-based sources and higher harmonic generation, and other x-ray generation schemes are covered.

The scope of ICXRL 2014 included, but was not limited to:

Laser-pumped X-ray lasersDischarge excitation and other X-ray laser pumping methodsInjection/seeding of X-ray amplifiersNew lasing transitions and novel X-ray laser schemesHigh Harmonic sources-Free-electron laser generation in the XUV and X-ray rangeNovel schemes for coherent XUV and X-ray generationXUV and X-ray optics and metrology-Driving laser technologyTheory and modeling of X-ray gain medium and beam characteristicsApplicationsof high brightness and ultrashort X-ray sources

Dr. Jorge RoccaProfessorElectrical and Computer EngineeringColorado State UniversityFort Collins, CO 80523USA

Dr. Carmen MenoniProfessorElectrical and Computer EngineeringColorado State UniversityFort Collins, CO 80523USA

Dr. Mario MarconiProfessorElectrical and Computer EngineeringColorado State UniversityFort Collins, CO 80523USA

1. Progress and Prospects of Coherent X-Ray Research Using High Power Lasers in Japan Atomic Energy Agency.- 2. Advances in High Average Power, 100 Hz Repetition Rate Table-top Soft X-Ray Lasers.- 3. Possibility of Recombination Gain Increase in CV Ions at 4.0nm via Coherence.- 4. Overview of development of laser driven secondary sources at PALS and ELI.- 5. Spectral properties of collisional XUV lasers for the amplification of femtosecond pulses.- 6. Transient collisionally excited x-ray Lasers pumped with one long and two short pulses.- 7. Seeded operation of a Ne-like Titanium soft x-ray laser.- 8. Output beam polarization of x-ray lasers with transient inversion.- 9. Improved sub-10nm Ni-like lasing by varying the slope of the traveling-wave velocity.- 10. Temporal response of seeded XUV lasers under different amplification regimes- inversion density threshold.- 11. Self-photopumped x-ray lasers from elements in the Ne-like and Ni-like ionization state.- 12. Pump-Probe Experiment for Temporal Profile Measurement of Plasma X-ray laser.- 13. Capillary discharge X-ray Lasers: the Quest for sub-10nm Lasers.