型番:OPM500 メーカー:Artifex Engineering 商品コード:L003803
波長: 250nm-2200nm
< Characteristics >
Flexible setup
Easy to use
Powerful
Interfaces: USB and hard-wire (DB25)
Rise time: 45µs
Noise equivalent current: 30 pW(RMS)
Gain, bandwidth and polarity control:
6 gain ranges; 4 bandwidths; polarity inversion
Auto-null function: up to 10V offset nulling
Photodiodes produce a current which is proportional to the incident light power over a wide dynamic range. The disadvantage when compared to calorimetric devices is the wavelength dependance. However, for use with monochromatic sources, the detector can be calibrated and the measured current corrected accordingly.
The current from the photodiode is converted to a voltage through a precise transimpedance amplifier. This amplifier is very linear over the full measurement range of the device. The OPM500 has 6 gain ranges. The switch is a semiconductor device, free from degradation. A unique feature of the OPM500 is the auto-null function. Further functions include signal inversion and bandwidth reduction. The analogue output signal is available at the BNC connector on the front panel an on the appropriate line on the interface port on the back panel.
The voltage generated is then converted to a digital value via a 12 bit A/D converter. This process and all calculations and communication with the PC are controlled by a microcontroller. The measurement process is started via a command over the USB interface (software trigger). Alternatively, a continuous measurement stream can be started which samples at 600 S/s.
The measured photocurrent may also be read out from the USB port. In addition, the calibration value for a given wavelength may be read out. Using these two values, the optical power can then be calculated.
価格 | 地域 | 代理店 | |
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要問い合わせ | 京都府 | 株式会社光響 | |