| 摘要 |
PROBLEM TO BE SOLVED: To accurately monitor quantity of light emitted from a laser diode chip. SOLUTION: In a laser module, having a laser diode chip 41 loaded inside packages 31 and 32, a front monitor 42 is set inside the packages 31 and 32 and in front of the laser diode chip 41 for monitoring a part of the light emitted from the laser diode chip 41. The front monitor 42 is arranged outside the optical effective range of the emitted light. |
