Re-pumped room-temperature maser

Apparatus comprising:

• a maser producing an output signal and having a pump and resonator chamber containing a gain medium, the gain medium comprising molecules capable of excitation to one or more excited singlet states wherein excitons are present and further being capable of undergoing inter-system crossing to a triplet state having three sub-levels, the maser comprising apparatus for re-pumping excitons from the triplet state to either a higher triplet sub-level or to one of the excited singlet states;
• and
• a meta-material configured to receive the output signal from the maser;
• a power meter coupled to the meta-material and adapted to determine if the output signal has been reduced or otherwise compromised in transit;
• and
• a radio coupled to the power meter and adapted to transmit a control signal to the maser,
• the maser further being adapted for control by the control signal.

A maser comprising:

• a pump;
• a resonator chamber containing a gain medium, the gain medium comprising molecules capable of excitation to one or more excited singlet states and undergoing inter-system crossing to a triplet state with two or more sub-levels;
• and an apparatus for re-pumping excitons from the lower triplet sub-level to an intermediate energy state and subsequently to one of the excited singlet states;
• wherein re-pumping mechanism includes:
• a secondary electromagnetic mode that operates at a frequency resonant with the transition from the lower triplet sub-level to the intermediate energy state;
• a magnetic field generator apparatus for aligning and adjusting the spin states of the excitons to assure the division of the triplet sub-levels to the desired magnitude;
• the strength of the secondary electromagnetic field being adjustable to optimize the transition efficiency;
• wherein the re-pumping process involves:
• applying a variable magnetic field to align the spin states of the excitons, ensuring effective division and transition between triplet sub-levels;
• utilizing an electric field applied to a stacked monolayer sheet of graphene to generate magnetism and control the direction of magnetization, enhancing the precision of the energy state transitions;
• periodically reversing the polarity of the magnetic field through a commutator switch or double pole double throw (DPDT) switch to reset the population inversion by elevating lower-level excitons to higher energy states, thus maintaining the masing action without interruption;
• further comprising:
• an apparatus to absorb ambient or pumped electromagnetic radiation and deliver it to the gain medium at an intensity sufficient to maintain the desired excitation states for continuous operation.

A maser comprising:

• a pump;
• a resonator chamber containing a gain medium, the gain medium comprising molecules capable of excitation to one or more excited singlet states and capable of undergoing inter-system crossing to a triplet state with three sub-levels;
• an apparatus for re-pumping excitons from the lower triplet sub-level directly back to the first excited singlet state, with re-pumping process facilitated by a secondary electromagnetic mode resonant with the transition from the lower triplet sub-level to the first excited singlet state, and the strength of the secondary electromagnetic field being adjustable to optimize the transition efficiency;
• further comprising an apparatus to absorb ambient or pumped electromagnetic radiation and deliver it to the gain medium at an intensity sufficient to maintain the desired excitation states for continuous operation.