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Dual fiber output single frequency laser at 780 nm
Erbium group develops the dual-channels single frequency fiber laser with the maximum output power up to 1W/2W for Gravimeter gradiometer based on Rb cold atom. The frequency difference between the two channels can be locked by beat frequency/ phase locking technique. The output ports of 1560/780 nm laser can be ordered, which provides high performance light source for gravimeter, quantum optics and so on. The seed laser, amplifier and frequency doubling module of dual-channel 1560 nm laser are integrated in a small air-cooling case. The whole machine has compact structure, stable and reliable performance, and can pass vibration and high-low temperature tests.
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Yb-Doped Single-Pass SHG Fiber Laser
Erbium group provides narrow-linewidth, mode-hopping free, frequency-doubled single frequency lasers from 488 to 560 nm, based on Yb-doped fiber lasers (YFL SSHG). It consists of an all-fiber amplifier seeded with single frequency fiber DFB laser, and a single-pass frequency doubling unit with PPLN/PPSLT crystal. Compared with frequency-doubled lasers based on diode laser, the fiber solution has a stable configuration, excellent beam quality (M² <1.1), high output power (up to 10 W) and low intensity noise (RIN<0.06% from 10 Hz-10 MHz). It remains mode-hopping-free and stable under wide temperature variation and high mechanical vibration.
