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Stimulated Raman scattering (SRS) is one of most efficient methods for generating new laser lines. In recent years, SRS in crystalline Raman media have attracted much attention for the advantages of high Raman scattering gain, favorable thermal conductivity and good mechanical and chemical stability [1-3]. So far most crystalline Raman lasers focus on Stokes generation. In contrast to Stokes generation,...
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.
Electrically pumped random lasers in the mid-infrared regime at λ∼ 10 μm have been demonstrated for the first time to our knowledge. The laser is based on a quantum cascade (QC) gain media with designed filling fractions of scatterers.
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...
We present the first quantitative glucose Raman detection in the physiological concentration range with a low laser power, a short integration time, and an extremely small sampling volume using the liquid-filled photonic crystal fiber probe.
We report on the first quantum-dot SESAM modelocked high-repetition-rate laser at 1550 nm. We demonstrate 10 GHz ERGO laser generating 2 ps pulses, modelocked by InAs/GaAs QD SESAM with measured saturation fluence of 9 μJ/cm2.
We report on the fabrication and characterization of flexible distributed-feedback (DFB) lasers made with CdSe/ZnS colloidal quantum dots. The laser cavity of these lasers is based on a submicron scale pattern replicated from a commercial DVD onto a photocurable flexible polymeric substrate followed by the drop-coating of a quantum dot solution. Typical laser threshold behavior and operation lifetime...
Tunable random laser emission over a 7-nm waveband is demonstrated using a green-emitting π-conjugated polymer infiltrated into a photonic glass formed by micron- and submicron-size monodisperse silica spheres. Corresponding scattering cross-section, scattering length and transport mean free paths are calculated using the Mie scattering theory and, along with experimental results, indicate that this...
Summary form only given. Suitable probing of an accumulated population grating can induce destructive interference among various order wave-mixing processes under strong saturation conditions, resulting in the suppression of the scattered signal. A similar effect is predicted in transient four-wave-mixing (FWM) with stochastic pumps. Experimental results for the latter case are presented.
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