Self-cascaded noncritically-phase-matched KTP optical parametric oscillator for generating orthogonally polarized multi-wavelength emissions at 3 μm

At the end of 2022 scientific group from Jiangsu Normal University, China published in Optics and Laser Technology (Elsevier) an article where they described among others pulse characteristics measurements of laser based on VIGO Photonics detector.

In the paper, authors provide an effective scheme to obtain multiple wavelength laser output in 3 μm region with orthogonal polarization state. They used Nd:YAG laser module to generate fundamental radiation – 1064 nm. Then they converted beam to 1.57 μm and 3.29 μm. Further system generates the wavelength of 2.95 μm and 3.37 μm. The total maximum average output power of the self-cascaded laser is 1.4 W. The pulse characteristics measurements were possible thanks to use of PVM-10.6 photovoltaic HgCdTe VIGO detector, which can also respond in the near-infrared region. 

This work shows that self-cascade effective scheme to realize mid-infrared laser output with narrow pulse width, high peak power and orthogonal polarization state with the use of VIGO detector.

Link to the article