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    • 2. 发明公开
    • 반도체 레이저의 파장 선택, 위상, 및 이득 영역에서의 파장 조절
    • 波长范围内的波长选择,相位和增益区域的波长控制
    • KR1020090091131A
    • 2009-08-26
    • KR1020097010051
    • 2007-10-11
    • 코닝 인코포레이티드
    • 바티아,빅람졸리아,잭퀴즈휴,마틴,에이치.로버,데이비드,에이.릭케츠,다니엘,오.
    • G02B26/10H01S5/0625G03B21/00
    • H01S5/06256H01S5/0092H01S5/06246H01S5/06832H01S5/0687H04N9/3129
    • Particular embodiments of the present invention relate generally to semiconductor lasers and laser scanning systems and, more particularly, to schemes for controlling semiconductor lasers. According to one embodiment of the present invention, a laser is configured for optical emission of encoded data. At least one parameter of the optical emission is a function of a drive current IGAIN injected into the gain section (16) of the semiconductor laser (10) and one or more additional drive currents IPHASE, IDBR. Mode selection in the semiconductor laser is altered by perturbing at least one of the additional drive currents IPHASE, IDBR witn a perturbation signal IPTRB to alter mode selection in the semiconductor laser (10) such that a plurality of different emission modes are selected in the semiconductor laser (10) over a target emission period. In this manner, patterned variations in the wavelength or intensity profile of the laser can be disrupted to disguise patterned flaws that would otherwise be readily noticeable in the output of the laser. ® KIPO & WIPO 2009
    • 本发明的具体实施方案一般涉及半导体激光器和激光扫描系统,更具体地,涉及用于控制半导体激光器的方案。 根据本发明的一个实施例,激光器被配置用于光发射编码数据。 光发射的至少一个参数是注入到半导体激光器(10)的增益部分(16)中的驱动电流IGAIN和一个或多个额外的驱动电流IPHASE,IDBR的函数。 通过扰乱扰动信号IPTRB中的附加驱动电流IPHASE,IDBR中的至少一个来改变半导体激光器中的模式选择,以改变半导体激光器(10)中的模式选择,使得在半导体激光器(10)中选择多个不同的发射模式 激光(10)在目标发射周期。 以这种方式,可以破坏激光器的波长或强度分布的图案变化来伪装图案化的缺陷,否则在激光器的输出中将容易看出。 ®KIPO&WIPO 2009