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Nuclear Magnetic Resonance Gyro (NMRG) utilizes the atomic spin to sense system angular rate. It has the advantages of small volume and high precision. The influence of the pump laser frequency fluctuation on the bias drift of NMRG has been studied in this paper. The output of NMRG in open loop is derived, and the process of 129Xe polarization via Spin-Exchange Optical Pumping (SEOP) is analyzed....
Enhanced stimulated polariton scattering induced by 532 nm green laser in KTiOPO4 terahertz parametric oscillator was demonstrated in this paper. An expanded terahertz wave tuning range from 5.7 to 6.1 THz, from 7.4 to 7.8 THz, from 11.5 to 11.8 THz and from 13.3 to 13.5 THz was achieved. The maximum terahertz output energy was 1.61 μJ at 7.57 THz, additionally, the energy levels of the terahertz...
Experimental results and calculations are presented demonstrating a semiconductor laser integrated with a spontaneous light emitting diode optical pump that can also act as a heat pump. Simulation shows this device could break unity efficiency.
Single-frequency and narrow-linewidth pulse amplification is demonstrated in an erbium-doped higher-order mode fiber with effective area of 6000m2 and output long-period grating for re-conversion of the output beam back to the fundamental mode.
Data are presented demonstrating, to our knowledge, the first monolithic chip integrating a semiconductor laser with a spontaneous light emitting diode optical pump that can also act as a heat pump. The light emitting diode operates in the voltage bias regime needed to generate a thermoelectrophotonic heat absorption. Under ideal operation the light emitting diode can efficiently optically pump the...
Higher order modes for large-mode-area, high power fiber amplifiers are reviewed. Results from amplification of both CW and nanosecond pulsed signals in Er-doped HOM fibers with effective areas as large as 4000 μm2 are presented.
Continuous wave and nanosecond pulse amplification in a higher-order-mode, Er-doped-fiber amplifier with 6000 μm2 effective area is demonstrated. Both 1480nm pump and 1560nm signal propagate in the LP0, 14 mode.
An erbium-doped double clad fiber laser in-band pumped by a 1535-nm broad area laser is demonstrated. This technique promises scalability to extremely high powers due to the low quantum defect.
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