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Building on QD Laser’s Quantum Well DFB technology the QLD0593 series utilise Second Harmonic Generation (SHG) based on waveguide PPLN (Periodically-Poled LiNbO₃) to produce outputs at 532nm, 561nm and 594nm with power levels of 5mW, 20mW, 30mW and 50mW (depending on the wavelength).
The use of a frequency-doubled DFB source enables extremely stable singlemode operation in both CW and directly modulated operation. Modulation rates of up to 100MHz can be achieved as well as extinction ratios of up to 40dB. This modulation capability without spectral disturbance means the QD Laser modules are ideal for video applications as well as many life science applications and the narrow spectral linewidth is also suitable for microscopy, spectroscopy and sensing system
QDL also offer a fibre-coupled version of the CVLM technology, the QLD0561 series is available with options of singlemode, polarisation maintaining or multimode fibre and a choice of connectors. The QLD0561 series is presently offered at 532nm and 561nm and is rated at 15mW for SM and PM fibre and 25mW with MM.
For more information on Compact 532/561/594nm Laser Diode Modules talk to AP Technologies Ltd