A wavelength tunable 2-ps pulse VECSEL
A wavelength tunable 2-ps pulse VECSEL
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波长可调谐 2-ps 脉冲 VECSEL
DOI:
10.1117/12.908337
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Morris O
中科院分区:
文献类型:
--
作者:
Morris O
We report a mode-locked Vertical-External-Cavity Surface-Emitting Laser (VECSEL) that exhibits 13.7 nm of tuning around a centre wavelength of 1042 nm. The wavelength tuning is achieved by incorporating an uncoated, 25 μm thick, fused silica etalon into the cavity of the laser at Brewster's angle. The etalon is then tilted with respect to the cavity axis. The etalon has a calculated free spectral range of 14 nm at normal incidence. The repetition rate of the laser is measured to be 1.88 GHz. The pulse duration, averaged over the tuning range, is 1.9 ps corresponding to a mean time bandwidth product of 0.46. For a sech2pulse this is 1.46 times larger than the transform limit. The average power of the laser does not fall below 2.6 mW and, over the tuning range, averages 3.5 mW. With appropriate amplification, such a laser would be highly suited to the generation of heralded single photons in photonic crystal fibre.
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DOI:
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