Title : 
Efficient generation of a coherent water window x-ray by phase-matched high-order harmonic
         
        
            Author : 
Takahashi, Eiji J. ; Kanai, Tsuneto ; Ishikawa, Kenichi L. ; Midorikawa, Katsumi
         
        
            Author_Institution : 
Extreme Photonics Res. Group, RIKEN Adv. Sci. Inst., Wako, Japan
         
        
        
        
        
        
            Abstract : 
We demonstrate the generation of a coherent water window x-ray by phase-matched high-order harmonic under a neutral-medium condition. The maximum harmonic photon energy attained are 300 eV and 450 eV in Ne and He, respectively.
         
        
            Keywords : 
optical harmonic generation; photons; He; Ne; coherent water window x-ray; efficient generation; electron volt energy 300 eV; electron volt energy 450 eV; high-order harmonic; neutral-medium condition; phase-matched; Electromagnetic wave absorption; Free electron lasers; Frequency conversion; Gratings; Helium; Laser theory; Optical frequency conversion; Optical harmonic generation; X-ray imaging; X-ray lasers; (140.7240) UV, EUV, and X-ray lasers; (190.4160) Multiharmonic generation;
         
        
        
        
            Conference_Titel : 
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
         
        
            Conference_Location : 
Baltimore, MD
         
        
            Print_ISBN : 
978-1-55752-869-8
         
        
            Electronic_ISBN : 
978-1-55752-869-8