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A compact two-stage optical parametric chirped pulse amplifier based on photonic crystal fibre is demonstrated.A 1064-nm soliton pulse is obtained in a home-made photonic crystal fibre (PCF) with femtosecond pulse pumping and then amplified to 2 mJ in an Nd:YAG regenerative amplifier.After the amplified pulses pass through the LBO crystal,the 532-nm double-frequency light with an energy of 0.8 mJ and a duration of over 100 ps at 10-Hz repetition rate is generated as a pump source in the following two-stage optical parametric amplification (OPA).The 850-nm chirped signal light gain from the stretcher is 1.5×10 4 in the first-stage OPA while it is 120 in the second-stage OPA.The total signal gain of optical parametric chirped pulse amplification (OPCPA) can reach 1.8×10 6. 相似文献
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High energy and long pulse generation with high-birefringence photonic crystal fibre and laser-diode pumped regenerative amplifier 下载免费PDF全文
We report on the generation of a high energy and long
pulse for pumping optical parametric chirped-pulse amplification
(OPCPA) by a high-birefringence photonic crystal fibre (HB-PCF) and
a laser-diode-pumped regenerative chirped pulse amplifier. Using the
femtosecond pump pulse centred at 815~nm, a 1064~nm soliton pulse is
produced in the HB-PCF. After injecting it into an Nd:YAG
regenerative amplifier with the glass etalons, a narrow-band
amplified pulse with an energy of $\sim $4~mJ and a duration of 235
ps is achieved at a repetition rate of 10~Hz, which is suitable for
being used as a pump source in the 800~nm OPCPA system. 相似文献
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