Yb-doped fiber amplifier for deep-space optical communications

All-fiber pulsed laser transmitter for space-based 3D imaging lidar

“…But the problem of high voltage driver and electronic jamming is unaccepted for short-range detection of lunar landing. For our laser, the Laser-Diode (LD) seeder based MOPA design is used, which consists of a pulsed seeder LD followed by two pre-amplification stages and one booster stage to meet the final energy level requirement [4,5]. This LD seeder based MOPA system can easily generate pulses with narrow rising time and high repetition rate by directly modulating the LD seeder with acceptable working voltage and power consumption [6,7].…”

Theoretical and experimental study of the pump pulse width optimization of the Yb-doped fiber amplifier

“…Ytterbium-doped fiber amplifiers have attracted increasing interests in military, industry, medicine and telecommunications due to their advantages, such as compactness, high power, excellent beam quality, and high conversion efficiency [1][2][3]. In the low repetition rate high energy fiber MOPA system, it is very important to choose the appropriate pump pulse width in order to achieve the best amplification results, meanwhile, to maximize the suppression of the ASE and reduce the heat generated in the amplification process.…”

Passive coherent combination of all-fiber multichannel pulsed laser based on optical feed-back ring cavity

“…Via the use of cladding-pumped fiber architectures, the promising rise of output power of semiconductor pump sources, and the essential development of Large Mode Area(LMA) rare-earth-doped double-cladding fiber's fabrication technique, the record-breaking output power upto 10kW in singlemode lasers with near-diffraction-limited beam quality [1] . Compared to continuous-wave(CW) fiber lasers, pulsed fiber laser has higher pulse energies and peak-power, simultaneity, the outstanding performance be maintained in terms of output power, beam quality, overall efficiency, and flexibility with regard to operating wavelength and radiation format [1,2,3,4,5] . That provides considerable potential to practical applications, such as most notably marking, precision machining, material processing, medical appliance, Lidar, space-communication, and so on [1,2,3] .It is one of the most important tendency from the high power CW fiber lasers up to high power pulsed fiber laser [3,7] ， and consequently high output power, high repetition rate, nanosecond pulse duration, high-brightness laser output become a hotspot for pulsed fiber laser's development.…”