飛秒光學(xué)脈沖電場(chǎng)包絡(luò)一階時(shí)域微分實(shí)驗(yàn)研究
[Abstract]:The time-domain differential technique of optical pulse has an important application in the field of space-time measurement. The accuracy of space-time measurement can reach or exceed the standard quantum limit by using differential pulse. The first-order differential experiments of pulse electric field envelope with a central wavelength of 813 nm and pulse width of 130fs were carried out by using birefringent crystal and Fourier pulse shaping system respectively. The first-order differential energy conversion efficiency of pulse electric field envelope obtained by using birefringent crystal is 0.36 and the spectrum distribution of electric field intensity is only in the full range of the spectrum half peak near the center frequency, which is in good agreement with the theoretical value. The coincidence degree is 91.36, the farther away from the center frequency, the bigger the gap with the theoretical value. The first-order differential energy conversion efficiency of the pulse electric field envelope obtained by Fourier pulse shaping system is 11.10. The coincidence between the electric field intensity and the theoretical value is more than 98.37 in the effective modulation range of the spatial light modulator. Compared with the pulse differential method based on birefringence crystal, the pulse differential method based on Fourier pulse shaping system has a higher energy conversion efficiency and a larger spectral range consistent with the theoretical values. Moreover, the differential pulse of any order can be generated conveniently, and it can better meet the needs of high precision time synchronization applications.
【作者單位】: 中國(guó)科學(xué)院國(guó)家授時(shí)中心時(shí)間頻率基準(zhǔn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);西安科技大學(xué)理學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(91336108,11273024,91636101,Y133ZK1101) 中國(guó)科學(xué)院科研裝備研制項(xiàng)目;中國(guó)科學(xué)院前沿科學(xué)重點(diǎn)研究項(xiàng)目(QYZDB-SSWSLH007) 中組部“青年拔尖人才”支持計(jì)劃
【分類(lèi)號(hào)】:O437
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