We demonstrate a technique for single transverse mode operation of high-power broad area laser diode (BAL). In the experiment, the HR mirror is used as an external cavity mirror and the grating is used as a wavelength...We demonstrate a technique for single transverse mode operation of high-power broad area laser diode (BAL). In the experiment, the HR mirror is used as an external cavity mirror and the grating is used as a wavelength selective component. By tiling the HR mirror and the grating, the number of transverse modes oscillating in the cavity can be limited and the spectral bandwidth of the laser diode can be reduced. A single-lobed near diffraction-limited laser beam with the beam divergence (FWHM) of 0.43°, the spectral line-width of 0.7 nm and the output power of 350 mW are obtained. With the feedback, the power density of the output laser beam is increased 6 times in comparison with the free running.展开更多
The dynamical evolution and the stabiity property of both bright and dark holographic solton pairs have been investigated numerically. Resultshow that mutual trapping between two beams in pair is balanceable and both ...The dynamical evolution and the stabiity property of both bright and dark holographic solton pairs have been investigated numerically. Resultshow that mutual trapping between two beams in pair is balanceable and both beams can survive aspatial solitons, and these solitons are stable againssmall perturbations.展开更多
基金This work was supported by the National Natural Science Foundation of China under Grant No. 60278038.
文摘We demonstrate a technique for single transverse mode operation of high-power broad area laser diode (BAL). In the experiment, the HR mirror is used as an external cavity mirror and the grating is used as a wavelength selective component. By tiling the HR mirror and the grating, the number of transverse modes oscillating in the cavity can be limited and the spectral bandwidth of the laser diode can be reduced. A single-lobed near diffraction-limited laser beam with the beam divergence (FWHM) of 0.43°, the spectral line-width of 0.7 nm and the output power of 350 mW are obtained. With the feedback, the power density of the output laser beam is increased 6 times in comparison with the free running.
文摘The dynamical evolution and the stabiity property of both bright and dark holographic solton pairs have been investigated numerically. Resultshow that mutual trapping between two beams in pair is balanceable and both beams can survive aspatial solitons, and these solitons are stable againssmall perturbations.
