A broadly tunable extreme ultraviolet laser source with a 0.008 cm-1 bandwidth

被引:85
作者
Hollenstein, U [1 ]
Palm, H [1 ]
Merkt, F [1 ]
机构
[1] ETH Zurich, Phys Chem Lab, CH-8092 Zurich, Switzerland
关键词
D O I
10.1063/1.1310344
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A new coherent narrow bandwidth extreme ultraviolet (XUV) laser source has been developed that is broadly tunable in the range 10-17 eV with a bandwidth of 0.008 cm(-1) and intensities of 10(8) photons/pulse at 20 Hz. The source is based on two-photon resonance-enhanced sum-frequency mixing in rare gases. To demonstrate its properties, high-resolution photoionization and photoelectron spectra of argon have been recorded in the vicinity of the second, spin-orbit excited ionization threshold (Ar+2P1/2). From the analysis of the autoionization line shapes of the ns(')[1/2](J=1) and nd'[3/2](J=1) resonances, reduced linewidths Gamma (r,l)=Gamma (l)xn(*3) of 499.3(46) cm(-1) and 28.76(89)x10(3) cm(-1) have been determined for the s(') and d(') series, respectively. The results for the ns'[1/2](J=1) series confirm the conclusion reached by Klar [Z. Phys. D 23, 101 (1992)] that earlier single-photon XUV investigations have overestimated the width of these sharp resonances. The narrow bandwidth of the source is also used to accurately determine the range of principal quantum number of the high Rydberg states that are probed by selected electric field ionization sequences in pulsed-field-ionization zero-kinetic-energy photoelectron spectroscopy. (C) 2000 American Institute of Physics. [S0034-6748(00)05110-8].
引用
收藏
页码:4023 / 4028
页数:6
相关论文
共 48 条
[1]  
[Anonymous], 1978, ATLAS SPECTRE ABSORP
[2]   About the absorption series of argon, krypton and xenon to the term of ionisation boudaries between (2)P(3/2)(0) and (2)P(1/2)(0) [J].
Beutler, H. .
ZEITSCHRIFT FUR PHYSIK, 1935, 93 (3-4) :177-196
[3]   THE DYNAMICS OF HIGH AUTOIONIZING RYDBERG STATES OF AR [J].
BIXON, M ;
JORTNER, J .
JOURNAL OF CHEMICAL PHYSICS, 1995, 103 (11) :4431-4446
[4]  
Bömmels J, 1999, J PHYS B-AT MOL OPT, V32, P2399, DOI 10.1088/0953-4075/32/10/309
[5]   FACTORS AFFECTING LIFETIMES AND RESOLUTION OF RYDBERG STATES OBSERVED IN ZERO-ELECTRON-KINETIC-ENERGY SPECTROSCOPY [J].
CHUPKA, WA .
JOURNAL OF CHEMICAL PHYSICS, 1993, 98 (06) :4520-4530
[6]   ULTRANARROW BANDWIDTH VUV-XUV LASER SYSTEM [J].
CROMWELL, E ;
TRICKL, T ;
LEE, YT ;
KUNG, AH .
REVIEW OF SCIENTIFIC INSTRUMENTS, 1989, 60 (09) :2888-2892
[7]   Fractional stark state selective electric field ionization of very high-n Rydberg states of molecules [J].
Dietrich, HJ ;
MullerDethlefs, K ;
Baranov, LY .
PHYSICAL REVIEW LETTERS, 1996, 76 (19) :3530-3533
[8]   Lamb shift measurement in the 1 S-1 ground state of helium [J].
Eikema, KSE ;
Ubachs, W ;
Vassen, W ;
Hogervorst, W .
PHYSICAL REVIEW A, 1997, 55 (03) :1866-1884
[9]   OBSERVATION OF THE STARK-EFFECT IN AUTOIONIZING RYDBERG STATES OF AR WITH A MULTICHANNEL QUANTUM-DEFECT ANALYSIS [J].
FIELDING, HH ;
SOFTLEY, TP .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1992, 25 (20) :4125-4139
[10]   PHOTOIONIZATION AND ZEKE PHOTOELECTRON-SPECTROSCOPY OF AR, H2 AND CO2 USING A COHERENT XUV LASER SOURCE [J].
FIELDING, HH ;
SOFTLEY, TP ;
MERKT, F .
CHEMICAL PHYSICS, 1991, 155 (02) :257-265