[en] The conventional HCP (hypocycloidal pinch) device has been proven to have significant advantages over traditional flashlamps in terms of output power, life expectancy and selectivity of spectra in the UV (ultraviolet) region. However, the conventional HCP device's electrical discharge was contaminated with dye cuvette due to vaporization of the electrodes and the insulators. As a result, we improved the electrode and the insulator of the conventional HCP device and investigated the electrical and the optical properties of the improved HCP device. The pumping light intensity of the improved HCP device was compared with that of the conventional HCP device. The optimum operating pressure output power of the UV dye laser pumped by the HCP was 192 kW at input energy of 900 J. In addition, the untuned laser wavelength was 385 nm and the half width of the laser was 3 nm