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	Very short light pulse generating equipment
	ODANI JIYUN; YANAI TETSUO
	1991-04-11
著作权人	松下電器産業株式会社
专利号	JP1991087085A
国家	日本
文献子类	发明申请
其他题名	Very short light pulse generating equipment
英文摘要	PURPOSE:To realize the large output of very short light pulse with short wavelength by a method wherein a semiconductor laser is constituted of a gain region and a saturable absorption region, a very short light pulse with a large peak output is obtained, light pulse output of laser is made to enter, as the fundamental wave, into a wavelength transducer of an optical waveguide type, and the second harmonic wave proportional to square of the fundamental wave output is obtained. CONSTITUTION:A very short light pulse generating equipment of wavelength converting type is constituted of the following; a GaAlAs/GaAs based semiconductor laser 9 of oscillation wavelength of 0.83mum, a GaAlAs active layer 10, a gain region 11 having a length of 230mum, saturable absorption regions 12, 13 having a length of 25mum, a current injecting electrode 14, a wavelength transducer 2, an optical waveguide 3, lenses 4, 5, and a lambda/2 plate 6. The resonator end-surface 20 of the laser 9 is formed of a multilayer coating of Al2O3 and Si, and the reflection factor is high: 96%. The end-surface 21 is formed of a single layer of Al2O3, and the reflection factor is low and 3%. In the transducer 2, the optical waveguide 3 is formed on a Z-cut LiNbO3 substrate by proton exchange. The fundamental wave is the lowest order TM waveguide mode, and the higher harmonics are the Cherenkov radiation type of the TM radiation mode.
公开日期	1991-04-11
申请日期	1990-05-25
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/64350]
专题	半导体激光器专利数据库
作者单位	松下電器産業株式会社
推荐引用方式 GB/T 7714	ODANI JIYUN,YANAI TETSUO. Very short light pulse generating equipment. JP1991087085A. 1991-04-11.

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