-
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.
-
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.
-
Raman Fiber Laser
Erbium group offers 1100-2000 nm Raman fiber laser to overcome the limited emission spectral region of the rare-earth-doped fiber laser. The maximum output power can reach up to 400 W for single-mode operation. They are designed for the applications like mid-infrared, tandem laser pumping, laser spectroscopy and industrial application.
-
780nm laser frequency locking module
Cold atom experiments with Rb need lasers with specific frequency and Erbium group launches different frequency locking schedules for 780nm laser. We built up an all-fiber-connected frequency locking module with an integrated optical system and other optical fiber devices. This module can offer stable SAS or MTS signal and together with our laser controller Preci-Lock, frequency locking with good long-term stability is realized. The frequency difference between two lasers should keep to a constant value in some cold atom experiments. For 87Rb atom gravimeter, the frequency difference of cooling laser and repumping laser should be about 6.6GHz and for the two Raman lasers the value is 6.834GHz. PreciLasers has launched a specialized laser controller Preci-Beat for offset frequency locking in the range from 50MHz to 8GHz with beat frequency/phase locking technique.
-
Er-Doped Single-Pass SHG Fiber Laser
Erbium group provides narrow-linewidth, mode-hopping free, frequency doubled single frequency lasers from 765 to 798 nm, based on Er-doped fiber lasers (EFL-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 diode laser, the fiber solution has 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.
-
Wavelength Tunable Fiber Laser
Erbium group offers electrically controlled tunable 1010-1090 nm Yb-doped fiber laser, 1530-1580 nm Er-doped fiber laser and Tm-doped 1850-2030 nm fiber laser. The maximum output power can reach up to 100 W. The lasers have excellent beam quality and good power stability, which makes them ideal light sources for applications like laser cooling, pump source for mid-infrared laser, and spectroscopy.
-
High power single frequency Yb-doped fiber laser
Erbium group offers a 1010-1120 nm Ytterbium-doped fiber amplifier with innovative ASE suppression technology. Maximum output power reaches up to 130 W for a single-frequency operation. The lasers have ultra-low intensity noise, which makes them ideal light sources for the applications like optical lattice and laser atoms cooling. The full protection system of the laser ensures long-term free of maintenance and long life time.
-
Ultra-Low Noise Fiber Laser
Single Frequency Fiber laser with low Relative Intensity Noise (RIN) have wide application in quantum optics, pumping lasers, lidar, coherent optical communications, high-precision optical sensing, optical measurement, and precision spectroscopy. For example, the laser for trapping atoms in optical lattice demands not only high output power, but also low RIN to reduce the resonance between the lattice and atoms and low frequency noise (FN) to reduce the spatial vibration, which is quite important for the atoms lifetime in the lattice. In the atomic interferometer and atomic clock application, high power laser could lead to more atoms, uniform interaction area and high measurement SNR.
-
Single-Pass SHG Raman Fiber Laser
Erbium group offers high power, narrow-linewidth, frequency doubled Raman fiber laser from 560 to 760 nm for applications like laser cooling of atoms. It consists of an all-fiber Raman amplifier seeded with ultra-narrow linewidth external cavity diode laser or fiber DFB laser, and a single-pass frequency doubling unit with periodically poled nonlinear crystal. Compared with frequency-doubled diode laser, the fiber solution has stable configuration, excellent beam quality (M² <1.2), high output power (up to 10 W). It remains mode-hopping-free and stable under wide temperature variation and high mechanical vibration and can be applied in the quantum technology, biomedicals and industry.
-
Laser Locking Controller: Preci-Lock
A fully functional laser locking controller (Preci-Lock) developed by Erbium group can be used for frequency locking in different application scenarios. Preci-Lock integrating modulation and demodulation module, PID module and high voltage amplifier module. It integrates the functions of error signal generation, PID servo and PZT drive. Preci-Lock can been used as locking controller for a variety of common frequency stabilization techniques, such as absorption spectrum, saturated absorption spectrum, modulation spectrum, modulation transfer spectrum and PDH technology.
-
High power single frequency 1064 nm fiber laser
Erbium group offers a high-power (up to 130 W), low intensity noise, narrow linewidth highly reliable fiber laser for the optical lattice application. It is a combination of an all-fiber Ytterbium amplifier and an ultra-narrow linewidth ECDL laser at 1064 nm . The intensity noise of the laser is < -140 dBc/Hz from 10 kHz to 10 MHz. The full protection system of the laser ensures long-term free of maintainence and long life time. The laser occupies only a The laser is compact and robust, which only occupies an area of 300*240 mm
-
759/813nm Ultra-Noise Single Frequency Laser
Erbium group offers a high-power, low intensity noise, narrow linewidth highly reliable 759/813nm fiber laser solution (FL-SF-759-2-CW, FL-SF- 813-4-CW) for the magic-wavelength optical for Yb/Sr atomic clock.
