Portable digitally controlled iodine stabilized He-Ne laser with very long lock-up time

A digitally controlled iodine stabilized laser with an increased stabilization (lock-up) time and reduced dependence on the changes of external conditions is described. Its construction is very compact as it consists of only two units: a laser and a power supply and it does not require any external devices for operation, neither a computer nor an oscilloscope. The laser is constructed in such a way that it is possible to transport it from one place to another without necessity of realigning resonator mirrors. The digital control allows full supervision of the device operation and/or unattended operation of the laser. Such laser is suitable for all applications requiring ultimate frequency stability and simple use.