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  4. HeNe heterodyne light source (FS-HNL) (Photon Probe Co., Ltd.)

HeNe heterodyne light source (FS-HNL)
Photon Probe Co., Ltd.

About This Product

■Features

Reference light source for heterodyne measurement composition

■The following is required as a light source for heterodyne measurement.

- Small fluctuation in optical frequency. (See next item for reason) ・The beat frequency can be set according to the measurement target ・The beat frequency must be stable. is. This light source meets these performance requirements.

■Beat frequency setting

Heterodyne measurements use two lights with slightly different wavelengths. This optical frequency difference is the frequency range in which electrical signals can be processed. There is no problem in that respect. What you need to be careful about when setting up is the amount of Doppler shift. In other words, when the object to be measured moves, the Doppler effect occurs and the optical frequency shifts slightly. Please set the beat frequency to be greater than that shift amount. The amount of Doppler shift D (Hz) has the following relationship with the moving speed V (m/s) of the object to be measured. Here λ is the wavelength of light. For a HeNe laser, the Doppler shift is 3.15MHz for a speed of 1m/s. When measuring such speeds, please select a beat frequency higher than this frequency. Please select from 5MHz or 10MHz. Switching is done with a single connector.

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    HeNe heterodyne light source (FS-HNL)

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1 Models of HeNe heterodyne light source (FS-HNL)

Image Part Number Price (excluding tax) Power supply Size Output light amount Output light quantity Output light extraction connector Output light polarization characteristics Laser used Beat frequency stability Beat frequency

FS-HNL

Available upon quote

AC100V, 2A

430W x 150H x 320D (Reference value) Design according to the application.

250μW or more for each channel

2 channels

FC connector (Please connect using constant polarization fiber) Space propagation type is also available.

Both channels linearly polarized

Frequency stabilized HeNe laser

1ppm

25, 50, 100, 500kHz, 1, 5, 10MHz

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About Company Handling This Product

Photon Probe Co., Ltd.

  • Japan

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