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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,...
We present our recently experimental results on a DFB laser diode pumped Rubidium atomic frequency standard. Our experiment was based on a homemade lamp-pumped Rubidium frequency standard with the discharge lamp assembly removed. In the experiment, we first locked a DFB laser diode to the 87Rb cycling transition (5S1/2, F=2→5P3/2, F=3) by means of saturation absorption locking technique. After that,...
We have designed and fabricated novel, free-standing GaAs nano-whisker (NW) detectors and demonstrated their femtosecond photoresponse. The NW device was characterized using a femtosecond, time-resolved (THz bandwidth) electro-optic sampling method. Electrical photoresponse transients as short as 600 fs were recorded and their frequency-domain analysis indicated that the intrinsic NW photodetector...
Rapidly responding, high-sensitivity terahertz (THz)-wave detection with an organic DAST crystal was demonstrated using nonlinear frequency up-conversion to near-infrared light. Detection of THz-wave signals from 16.4-THz to 26.3-THz was achieved at room temperature.
We report resonantly cladding-pumped Yb-free Er-doped fiber laser delivering ~48 W of CW output at 1590 nm with ~57% efficiency. It is believed to be the highest power ever reported from Yb-free, Er-doped LMA fiber.
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