Author Affiliations
School of Optics and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, Chinashow less
Fig. 1. Experimental setup of two-stage optical parametric amplifier
Fig. 2. White light supercontinuum spectra measured at the front surface of lens L2 under different coordinates. (a) Linear coordinate;(b) logarithmic coordinate
Fig. 3. Pulsed spectra before and after preamplification. (a) White light supercontinuum spectrum before preamplification (measured at the front surface of BBO crystal C2) after filter; (b) white light supercontinuum spectra after preamplification (from left to right: 520, 530, 550, 570, 590 nm); (c) spectra of idler light after preamplification (from left to right: 1240,1340,1467,1630,1745 nm)
Fig. 4. Output pulse spatial characteristics after preamplification. (a) Signal light (550 nm);(b) idler light (1467 nm)
Fig. 5. Output characteristics of different wavelength pulses of power amplification. (a) Output spectra of signal pulse (1350 nm) and idler pulse (1963 nm); (b) output spectra of signal pulse (1450 nm) and idler pulse (1785 nm); (c) output spectra of signal pulse (1540 nm) and idler pulse (1665 nm) ; (d) output spectra of signal pulse (1733 nm) and idler pulse (1485 nm); (e) output spatial characteristics of signal pulse(1450 nm); (f) output spatial characteristics of idler pulse (1785 nm)
Fig. 6. Output characterization after two-stage amplification. (a) Output energy under different signal wavelengths; (b) quantum conversion efficiency under different signal wavelengths
Fig. 7. Pulsed time-domain curves fitted by autocorrelator after two-stage amplification. (a) Signal pulse (1467 nm);(b) idler pulse (1800 nm)