- 高达76 kHz的测量速度
- <200 kHz分辨率
- 2 MHz绝对精度
- 可用于192-11000 nm的仪器
HighFinesse 波长计是用于脉冲或连续激光源波长测量的先进高端仪器。 它们提供高端科学研究以及工业和医疗应用所需的绝对和相对精度。
WS8 系列的精度，绝对精度低至 2 MHz，测量分辨率为 200 kHz 或更低，这是通过使用具有独特几何配置的非移动 Fizeau 干涉仪实现的。 HighFinesse 波长计都依赖于这个久经考验的概念。 为了实现更高的稳定性和精度，补偿了温度和压力效应。 HighFinesse 还提供较快的商用波长计。 点击这里查看更多信息。 波长计的灵敏度低至 nJ 的量级，同时提供许多有用的选项，例如 PID 激光控制，提供用于控制激光波长的主动反馈回路。
Absolute Accuracy [MHz] Measurement Resolution [MHz] Speed [Hz] Wavelength Ranges [nm] Calibration WS8-2 2 0.2 500 330-1180 see SLR-series WS8-10 10 0.4 500 248-1750 see SLR-series WS7-30 30 1 500 248-2250 see SLR-series WS7-60 60 2 500 192-2250 built-in WS6-200 200 4 500, IR: 1500 192-11000 built-in WS6-600 600 20 950, IR: 1500 192-2250 built-in WS5 3000 500 950, IR: 1500 192-11000 built-in
All wavelength meters detect and measure pulsed signals automatically. Additionally, this option allows the user to trigger pulsed measurements externally. The TTL option guarantees synchronization between pulsed excitation and measurement.
With the PID option it is possible to stabilize the frequency of a laser connected to the wavelength meter using a software based proportional-integral-derivative controller (PID controller). Unlike analog PID electronics, the PID option provides software based signal processing, allowing the laser to be stabilized to a specific user defined frequency or regulated with an arbitrary pattern.
In order to measure the frequencies of more than just one laser at a time, an opto-mechanical switch is used. The combination of our high-speed wavelength meters with one of the quickest fiber switches (MEMS) available allows up to eight channels to be measured almost simultaneously.
The linewidth estimation of a singlemode laser source is performed by a special algorithm which eliminates the interferometer’s instrument response function. The algorithm enables the estimation of the linewidth with an accuracy better than the tenth of the instrument FSR.
The spectrometer option allows the analysis of emission spectra to an accuracy of 6 GHz, for laser sources with broad emission. The software automatically searches the spectral section where the laser emission line is located and displays it on the screen. In combination with the additional Fizeau interferometer array this allows wide range applications with a single instrument.
Standard HighFinesse wavelength meters up to an absolute accuracy of 60 MHz feature autocalibration via an integrated calibration source. This guarantees the accuracy and stability of measurements with our wavelength meters. For the higher accuracies we offer a variety of frequency stabilized, narrow linewidth, laser sources with up to ± 10 kHz frequency stability for different applications.
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