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PULSED LINEARLY POLARIZED OPTICAL FIBER LASER USING UNPOLARIZED Q-SWITCHED SEED LASER AND HAVING GOOD OUTPUT POWER STABILITY
PULSED LINEARLY POLARIZED OPTICAL FIBER LASER USING UNPOLARIZED Q-SWITCHED SEED LASER AND HAVING GOOD OUTPUT POWER STABILITY
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机译：使用非极化Q开关籽晶激光并具有良好的输出功率稳定性的脉冲线性极化光纤
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摘要
Optical fiber source for providing polarized optical pulses, comprising a Q-switched fiber laser for providing substantially unpolarized seed pulses of optical energy, where the Q-switched fiber laser can comprise a laser cavity having a Q-switch and an optical fiber comprising a gain medium, where the optical fiber need not be a polarizing or polarization maintaining optical fiber; a passive polarizing element arranged to receive and substantially polarize the substantially unpolarized seed pulses; and a polarization maintaining fiber amplifier arranged for receiving the polarized seed pulses. The polarization maintaining fiber amplifier can comprise a selected polarizing or polarization maintaining fiber having a core comprising a gain medium for amplifying the substantially polarized seed pulses, where the core can be normally multimode at a an operating wavelength of the optical fiber source. The fiber amplifier can provide substantially polarized output pulses. In one practice of the invention, the pulse power instability, over at least 100 consecutive pulses, is no greater than 10%.
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