The new SUB series of compact Air-cooled DPSS pumped Nd:YAG SUB-nanosecond lasers producing TEM00 emissions Single Longitudinal Mode (SLM) radiation in the SUB-nanosecond regime at ≤700ps and below. Lasers are based on monolithic, precisely temperature stabilized short cavity structures assuring Gaussian beam shape (M2<1.5). Depending on laser application, laser can be equipped with either E-O or Passive Q-Switching. The lasers produce good transversal TEM00 and temporal Single Longitudinal Mode (SLM) radiation. The models with electronically tunable pulse duration can also be offered on request. SLM cavities with temporal pulse compression by backward stimulated Brillouin scattering (SBS) assuring transform limited SUB-ns pulses, which have exceptional contrast are also available.