کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
733781 | 893368 | 2012 | 4 صفحه PDF | دانلود رایگان |
We report a sensitive photodetector, based on a manganite junction La2/3Ca1/3MnO3/Si, for femtosecond (fs) pulse laser energy per pulse and average power measurements. The La2/3Ca1/3MnO3/Si photodetector exhibits D⁎ (normalized detectivity) greater than 5.229×109 cm Hz1/2 W−1. The open-circuit photovoltage and short-circuit photocurrent responsivities reach ∼268 V/mJ and ∼275 A/mJ for single pulse irradiation, respectively, and the open-circuit photovoltage responsivity reaches ∼1.7 V/W for average power illumination. The experimental results make the manganite junction a promising fs laser measurement detector and reference standard for calibrating fs lasers.
► Manganite junctions can be a reference standard for calibrating fs lasers.
► The photodetector exhibits D⁎ greater than 5.229×109 cm Hz1/2 W−1.
► Responsivities reach 268 V/mJ and 275 A/mJ for single pulse irradiation.
► Photovoltage responsivity reaches 1.7 V/W for average power illumination.
Journal: Optics & Laser Technology - Volume 44, Issue 6, September 2012, Pages 1758–1761