Abstract: A nuclear fusion reactor comprising a spherical reaction chamber with a mirrored interior surface filled with a nuclear fusible and laser active gaseous medium such as deuterium. Using rapid gaseous expansion caused by a focused pulsed laser source and/or timed oscillations from piezoelectric transducer, a harmonic spherical acoustic wave pattern centered within the reaction chamber is created. This wave pattern is created near a desired frequency and centered in the sphere. The wave pattern contains a central gaseous ball of high-density, pressure, and temperature that causes ionization and radiation to occur. This radiation causes the mirrored chamber to activate a spherical laser effect focused on the high pressure plasma at the center of the reaction chamber. This spherical laser pulse acting on high pressure high-density of the central standing wave produces ignition of the gas and fusion.