Applicable model*: AQ6380/AQ6370 series/AQ6360
High-power gas lasers and fiber lasers of several Watt class are used for material processing and marking. These high power lasers are used with pulsed light to reduce the effects of heat generation, and The higher the output, the narrower the pulse width and the lower the repetition frequency. (e.g. pulse width: tens of ns, repetition cycle: tens of Hz)
With the applicable models, there are three methods to measure pulsed light : peak hold mode, external trigger mode, and normal mode (time average spectrum measurement.
Normal mode (Time average spectrum measurement)
The average power of the pulsed light is measured as the power of the optical spectrum. When the pulsed light is a square wave, the average optical power measured is (peak power of optical pulse [mW]) × (duty ratio of pulsed light). The smaller the duty ratio of the pulsed light, the lower the measurement power, but you can measure even a narrow pulse width.
The higher average power has the advantage of being faster than other methods. However, in this mode, the repetition frequency needs to be high enough to measure the average power correctly.
If the repetition frequency is low, measurement may be possible by selecting a high sensitivity setting or increasing the number of averaging.
* All versions unless otherwise specified.
Peak hold mode
Capture the peak value within the light pulse repetition period. The measurable pulse width is 100 μs or more.
External trigger mode
Capture the peak value of the optical pulse by supplying the OSA with a trigger signal that is synchronized with the optical pulse. The measurable pulse width is 50 μs or more.
Applicable measurement modes per OSA model
Measurement modes |
AQ6360 |
AQ6380 AQ6370 AQ6373 AQ6374 |
AQ6375 AQ6376 AQ6377 |
Time average spectrum |
l |
l |
l |
External trigger |
|
l |
¡ |
Peak hold |
|
l |
¡ |
l: Available
¡: Available (conditional)
Blank:Not available
Note. The external trigger and peak hold measurements are not available in HIGH1, HIGH2, and HIGH3 of AQ6375, AQ6376, and AQ6377 where the high dynamic range "CHOP“ mode is used.
Note. AQ6380 can measure Pulsed Light in
“TRAD” mode only.
Direct capture of high power pulsed light
High Performance LONG WAVELENGTH
The AQ6375E covers not only telecommunication wavelengths, but also the SWIR region which is often used for environmental sensing and medical applications.
・Lineup of 3 models [Standard, Extended and Limited]
・Covers wavelengths
1200 to 2400 nm [Standard, and Limited]
1000 to 2500 nm [Extended ]
MWIR WAVELENGTH with internal gas purge and cut filter
The AQ6376E is the latest version of our bench-top optical spectrum analyzer extending the wavelength coverage well beyond the NIR range of our previous models into the MWIR region from 1500 to 3400 nm.
Popular applications include the detection of gases such as carbon oxides (COx), nitrogen oxides (NOx), and hydrocarbon gas (CxHy) for environmental studies.
AQ6373B提供的350nm到1200nm专用短波长量程可以精确测量380nm到780nm的可见光谱,因此适用于生物科学和其它领域。此型号产品还是测量1064nm Nd:YAG, DPSS激光源的常用工具。
AQ6375B是一款波长可覆盖2μm以上范围的长波长台式光谱分析仪。 它专为一直苦于无长波长测量仪器可用的工程师和研究人员而设计, 在实现了高精度、 高分辨率和高灵敏度测量的同时, 可以提供全面的分析功能, 从而可省去校准步骤和开发外部分析软件的麻烦。
AQ6376是波长可覆盖2μm以上范围的长波长台式光谱分析仪, 专为一直苦于无长波长测量仪器可用的工程师和研究人员而设计。 AQ6376在实现了高精度、 高分辨率和高灵敏度测量的同时, 还可以提供全面的分析功能, 从而可省去校准步骤和开发外部分析软件的麻烦。