HighFinesse Wavelength Meter


  •  高达76 kHz的测量速度
  •  <200 kHz分辨率
  •  2 MHz绝对精度
  •  适用于192-11,000 nm的仪器


WS8系列具有卓越的精度,其绝对精度高达2 MHz,测量分辨率为200 kHz或更低,这是通过采用独特的几何结构的非移动Fizeau干涉仪实现的。所有HighFinesse波长计都依靠这一久经考验的概念。为了获得更高的稳定性和精度,可以补偿温度和压力的影响。 HighFinesse还提供相当快的市售波长表。点击这里查看更多信息。波长计的灵敏度可降低到nJ的大小,同时还有许多有用的选项可供选择,例如PID激光控制,它提供了一个有源反馈环路来控制激光波长。

  • Specification

      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
  • Options

    External Trigger

    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.

    Laser Control

    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.

    Linewidth Estimation

    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.

    External Calibration

    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.

  • Downloads

    For further technical information, datasheets and product brochures, please click here

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