J. R. Willison

Measurement of the He 1s2s 1 S 0 isotopic shift using a tunable VUV anti-Stokes light source

We describe a high-resolution, vacuum-ultraviolet spectroscopic technique based on a tunable, narrow-band, VUV, spontaneous anti-Stokes light source. The technique was used to measure the absolute energies of the 1s2s (1)S(0) states of (3)He and (4)He; the 1s2s (1)S(0) level of (3)He is 7.8 +/- 0.5 cm(-1) below that of (4)He.

Laser Induced Collisional and Radiative Energy Transfer

This paper summarizes progress on two related methods of rapidly transferring energy which is stored in a metastable level of one species to a target level of a different species. The two methods are laser induced collision, and laser induced (two-photon) spontaneous emission and subsequent absorption. Both utilize high peak power, short pulse tunable lasers and both are capable of rapid and selective energy transfer.

Anti‐Stokes scattering as an XUV radiation source and flashlamp

Anti‐Stokes scattering from atoms in an electrically excited discharge provides a means of translating many properties of visible lasers into the XUV. These properties include tunability, narrow linewidth, picosecond time scale, and prescribed polarization. This paper describes the use of anti‐Stokes scattering for absorption and emission spectroscopy of core‐excited levels and as a flashlamp for XUV lasers.

Anti-Stokes Scattering as an XUV Radiation Source

Laser induced scattering from atoms stored in a metastable level may be used to produce an XUV radiation source with several unique properties: narrow linewidth, tunability, linear polarization, picosecond pulsewidth, and relatively high peak spectral brightness [1].