International comparison of the He-Ne/I/sub 2/ lasers at the Slovak Institute of Metrology

The summary reports on the international comparison of the HeNe/I/sub 2/ lasers 633 nm, held at the SMU in April 1994. Parameters of eleven lasers from nine countries have been compared, including that of SMU B2 laser, the vacuum wavelength of which represents the primary standard of length in the Slovak Republic.