QD Laser, Inc. Commercializes a 1064-nm DFB Laser Module with Excellent Single-Mode Oscillation Property

Recently, semiconductor lasers with near-infrared (NIR) wavelength band of around 1064 nm has been paid much attention in many applications including fiber lasers for material processing, LIDAR, frequency conversion for generating exotic wavelengths, gas sensing, etc. To expand the application area, single-mode lasers with stable operation have been highly required.





The QLD1061 offers strong fiber output power (> 30 mW) and narrow spectral linewidth (< 10



MHz) with stable single-mode oscillation The DFB laser chip is packaged in a standard 14-pin butterfly laser module with an optical isolator. The module has an output pigtail using a polarization maintaining fiber.





The design of the laser chip in the QLD1061 is based on the state of the art DFB laser technology usually used in telecom applications, where quite high wavelength stability is required. Reliable packaging including a built-in optical isolator also contributes to the stability. In continuous-wave (CW) operation, the QLD1061 provides high side mode suppression ratio (SMSR) even when changing the output power in a wide range of operating temperature. In pulsed operation, a stable short pulse train between 50 ps and 100 ns is generated with low amplitude noise and low timing jitter maintaining high SMSR. These quite unique characteristics of the QLD1061 is obviously different from conventional wavelength-stabilized lasers such as a fiber grating based external cavity laser





From the evaluations of prototypes of the QLD1061 by global innovative companies, QD Laser, Inc. has already received a lot of positive responses. The QLD1061 is very suitable for variety of applications in CW or pulsed operation, for example, an injection seeder of a fiber laser and a wavelength sweeper for sensing. The QLD1061 will contribute to a performance improvement and market expansion of many systems with NIR wavelength range semiconductor lasers.