Apr. 02, 2010

Electrons Spiral to a New Future

A new physical quantity of electrons-orbital angular momentum-has been generated by Masaya Uchida and Akira Tonomura at the Riken Advanced Science Institute in Wako, Japan. The work in the international science journal Nature, could establish novel fields of research and lead to new electron microscopes. A wave can be characterized by the shape of its wavefronts: imaginary surfaces that connect all points where the wave is at the same stage in its oscillatory cycle. moreMar. 09, 2010

Tunable Diode Lasers

Grating stabilized diode lasers in Toptica's proprietary pro technology can now be equipped with laser diodes from 370 nm to 1770 nm. The TA pro, a master oscillator power amplifier system, provides up to 1.5W output. Frequency converted lasers offer UV, green or yellow light, e.g. at 589 nm with 20W (Guide Star) or 2W (Na laser cooling). Other recent developments include fiber amplified tunable diode lasers, cw lasers at 190 nm, and high speed locking electronics for linewidth narrowing below 1 Hz. more