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	Advances in narrow linewidth diode lasers 期刊论文 OAI收割 Science China-Information Sciences, 2019, 卷号: 62, 期号: 6, 页码: 13 作者: X.K.Lang; P.Jia; Y.Y.Chen; L.Qin; L.Liang \| 收藏 \| 浏览/下载：30/0 \| 提交时间：2020/08/24 diode lasers,narrow linewidth,internal cavity optical feedback,technology,external cavity optical feedback technology,solid-state
	False nonlinear effect in z-scan measurement based on semiconductor laser devices: theory and experiments 期刊论文 OAI收割 photonics res., 2014, 卷号: 2, 期号: 2, 页码: 51 作者: Yan, Hui; Wei, Jingsong 收藏 \| 浏览/下载：21/0 \| 提交时间：2016/11/28 REFLECTION Z-SCAN OPTICAL NONLINEARITIES EXTERNAL-CAVITY BEAMS FEEDBACK REFRACTION
	False nonlinear effect in z-scan measurement based on semiconductor laser devices: theory and experiments 期刊论文 OAI收割 photonics res., 2014, 卷号: 2, 期号: 2, 页码: 51 作者: Yan, Hui; Wei, Jingsong 收藏 \| 浏览/下载：22/0 \| 提交时间：2016/11/28 REFLECTION Z-SCAN OPTICAL NONLINEARITIES EXTERNAL-CAVITY BEAMS FEEDBACK REFRACTION
	Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文 OAI收割 Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China 作者: Liu Y.; Liu Y.; Qin L.; Liu Y.; Wang L. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 Based on the modified coupled-wave theory the emission characteristics including threshold gain photon density distribution in the cavity and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating we can change the two coupling coefficients which affect the emission characteristics. For an overall consideration an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47% respectively. 2010 SPIE.
	Analysis of spectrum narrowing of diode laser bar (EI CONFERENCE) 会议论文 OAI收割 Semiconductor Lasers and Applications III, November 12, 2007 - November 13, 2007, Beijing, China 作者: Liu Y.; Wang L.; Wang L.; Wang L.; Liu Y. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 Laser diode bar (LDB) are used increasingly often for many applications but spectral bandwidth of LDB are generally approximately 2-4nm far too wide for many demanding applications e.g. spin-exchange optical pumping terahertz generation and lidar. External-cavity feedback can improve the spectral properties of LD or LDB. However spectrum narrowing of LDB is more difficult than that of LD. Bar curvature (i.e. "smile") produced in the manufacturing process affects the spectrum narrowing greatly. By geometrical optics approach and ORIGIN software smile which can be corrected by plano-convex cylindrical lens is simulated and the result is in good agreement with experiment. The selection of grating which is also a critical factor of spectrum narrowing will be stated. Finally an external cavity consisting of fast axis collimator two plano-convex cylindrical lens and a diffraction grating is used. The scheme is implemented on a 19-element LDB and yields 3-fold reduction in spectral linewidth under the situation that all optical elements in the system which are not optimized. Further we use a slit in the experiment and analyze the spectrum narrowing of each element in LDB.
	Single steady frequency and narrow line width external cavity semiconductor laser 会议论文 OAI收割 conference on advanced characterization techniques for optics semiconductors and nanotechnologies, san diego, ca, aug 03-05, 2003 Zhao WR; Jiang PF; Xie FZ 收藏 \| 浏览/下载：21/1 \| 提交时间：2010/10/29 external cavity semiconductor laser light feedback single longitudinal mode spectral line width FEEDBACK DIODE
	Real-time far distance micro-vibration measurement using an external cavity semiconductor laser interferometer with a feedback control system 会议论文 OAI收割 conference on optical design and testing, shanghai, peoples r china, oct 15-18, 2002 Zhao WR; Jiang PF; Xie FZ 收藏 \| 浏览/下载：31/7 \| 提交时间：2010/10/29 external cavity semiconductor laser interferometer far distance micro-vibration measurement feedback control DISPLACEMENT MEASUREMENT DIODE INTERFEROMETER PHASE
	窄线宽半导体激光阵列外腔光谱合束的研究学位论文 OAI收割作者: 于娜 \| 收藏 \| 浏览/下载：43/0 \| 提交时间：2018/12/26 半导体激光阵列 Diode laser array 光束整形 beam shaping 光谱合束 Spectral beam combining 外腔反馈 external cavity feedback 衍射光栅 diffraction gratings
	半导体激光外腔反馈光谱合束的研究学位论文 OAI收割作者: 周权 \| 收藏 \| 浏览/下载：17/0 \| 提交时间：2018/12/26 光谱合束 Spectral beam combining 半导体激光器阵列 Diode laser array 外腔反馈 External cavity feedback 光束整形 Beam shaping 衍射光栅 Diffraction gratings