Resonant Frequency Conversion

A high-efficiency compact resonant frequency converter.In the case of a guidestar laser, two infrared beams are resonantly combined using sum-frequency conversion to create a 589-nm beam.  The guidestar FASOR systems create the high-power 589-nm beam in a crystal of the nonlinear material LBO (Lithium triborate.)  LBO is an extremely robust and reliable material, but it is not usually considered to be efficient for moderate-power cw operation.  Only when combined with resonant techniques can high conversion efficiencies, well above 50%, be achieved.  FASORtronics is expert in the optical and electronic technologies needed to efficiently and reliably convert one frequency to another.

Many designs are possible.  For example, individual infrared lasers can be resonantly doubled to create high power single-frequency beams at 532 nm and 660 nm.   Frequency subtraction, as occurs in OPOs, is also possible.  Summation and subtraction of any laser, even if it not single-frequency, is possible, if the trade-offs between power, nonlinear material, and the laser source are understood.

FASORtronics has the expertise to build frequency-converted lasers, such as these, at high power levels and offer them as a custom OEM device or as a commercially available product in quantity. We seek OEM partnerships or the opportunity to provide an innovative laser design for your challenging project requirements.