Abstract: A method for the production of isotopes with high-energy laser pulses assisted by plasmonic amplification, resulting in transmutation of nuclei, in particular hydrogen nuclei, of mass less than 6, characterized by plasmonic amplification of the laser field above a specific power density of at least 1013 W/cm2, by the amplification achieved with the use of plasmonic metal or dielectric nanoparticles resonant to the wavelength of the applied laser field between 600 and 1100 nm, leading to the amplification of the electromagnetic field of the laser, which does not have the necessary intensity to initiate the reaction, locally above the threshold level by interacting with nanoparticles with plasmonic properties, or, in the case of an already running reaction, this plasmonic interaction can be used to increase the efficiency of the reaction.

Abstract: A fluid cooled neodymium phosphate glass impulse laser comprising a passive release circuit. The laser may be designed with reduced size so as to be portable and is mainly used in medicine particularly for eye operations, in spectroscopy, in cosmetics, teaching and microtechnology. The proposed laser comprises a resonator of small size having a fluid cooled laser body and which may be disassembled without detuning the resonator, a closed cooling circuit, a supply unit of small size and low consumption and an electronic circuit. The resonator comprises a thick passive release composed of a F/2 center-colored LiF crystal and having a characteristic passive transmission power of 70%, a high reflection coefficient mirror and a partially reflecting output mirror having a characteristic transmission of 60%. The active material is composed of a phosphate glass bar of small diameter, generally 3mm, having a high concentration of Nd ions, generally from 1.2 to 1.4.times.10.sup.21 ions/cm.sup.3.