公开(公告)号：US20170373467A1

公开(公告)日：2017-12-28

申请号：US15625241

申请日：2017-06-16

Applicant: MITUTOYO CORPORATION

Inventor： Hidekazu OOZEKI ,  Toshiaki MATSUURA

IPC: H01S5/042 ,  H01S5/06 ,  H01S5/0683

CPC classification number: H01S3/137 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/109 ,  H01S3/1305 ,  H01S3/1312 ,  H01S3/1317 ,  H01S3/1392 ,  H01S3/1611 ,  H01S3/1673 ,  H01S5/02415 ,  H01S5/02446 ,  H01S5/042 ,  H01S5/0604 ,  H01S5/0612 ,  H01S5/06808 ,  H01S5/0683

Abstract: A current control device supplies a current to a semiconductor laser in order to output laser light to the semiconductor laser, and includes a current commander and a supplier. The current commander outputs a command value corresponding to a current value by increasing the command value with a lapse of time until reaching a target command value corresponding to a current value for outputting the laser light with a predetermined strength. The supplier supplies a current with a size corresponding to the command value output by the current commander to the semiconductor laser.

公开(公告)号：US20130195132A1

公开(公告)日：2013-08-01

申请号：US13739488

申请日：2013-01-11

Applicant: MITUTOYO CORPORATION

Inventor： Ryunosuke YANO ,  Hidekazu OOZEKI

IPC: G01N21/17 ,  H01S3/13

CPC classification number: G01N21/17 ,  H01S3/10069 ,  H01S3/13 ,  H01S3/1305 ,  H01S3/1392 ,  H01S3/1398

Abstract: A method for determining saturated absorption lines includes defining first and second threshold values based on an output value of a light output signal. The first and second threshold values are in a magnitude relationship. An output value of a second-order differential signal of the light output signal is compared with the first and second threshold values. A determination is made as to whether the second-order differential signal following a change in a resonator length has an output waveform that displays a behavior in which the output waveform changes from less than the second threshold value to be equal to or greater than the first threshold value, and then changes to be less than the second threshold value. Based on a result of the determination by the waveform determination, a determination is made as to whether the output waveform of the second-order differential signal is the saturated absorption line.

Abstract translation: 用于确定饱和吸收线的方法包括基于光输出信号的输出值来定义第一和第二阈值。 第一和第二阈值是大小关系。 将光输出信号的二阶差分信号的输出值与第一和第二阈值进行比较。 确定在谐振器长度的变化之后的二阶差分信号是否具有显示输出波形从小于第二阈值变为等于或大于第一阈值的行为的输出波形 阈值，然后更改为小于第二阈值。 基于通过波形确定的确定的结果，确定二阶差分信号的输出波形是否是饱和吸收线。