Testing CH4 1654nm 2mW with tail fiber VCSEL laser

Xiaoxiao Photon's new 1654nm VCSEL laser uses a newly invented high contrast grating layer (HCG), which is about 50 times thinner than traditional distributed Bragg reflectors (DBR), but has higher reflectivity and wider spectral width. Our laser has a tuning range of up to 8nm and a tuning frequency of up to 100kHz, making it an ideal choice for testing CH4 gas.