51nanoFI-S-635-1-H10-P-5-2-18-0-150

Fiber-coupled low coherence laser source with integrated Faraday isolator and single-mode fiber cable

51nanoFi-S

Faraday
Isolator

Single-
Mode

Features

The Laser Diode Beam Source of type 51nanoFI-S-635-1-H10-P-5-2-18-0-150 has a reduced power noise, a reduced coherence length and a low speckle contrast.

Reduced power noise: typ. < 0.4 % of P_o (RMS, Bandwidth < 1 MHz)
Reduced coherence length: coherence length ≈ 300 µm
Reduced speckle contrast
Wavelength: 635 nm
Laser output power: 0.9 mW
Integrated Faraday isolator > 30 dB
Single-mode fiber cable
FC APC connector (8°-polish)
Modulation analog and TTL
With interlock and key switch (conform to EN 60825-1)

Alternative: Laser Diode Beam Source 51nanoFi-N (OEM version w/o key switch and w/o interlock)

Description

The fiber-coupled Laser Diode Beam Source of type 51nanoFI-S-635-1-H10-P-5-2-18-0-150 has a reduced power noise (typ. < 0.4 % of P_o (RMS, Bandwidth < 1 MHz)), reduced coherence length (≈ 300 µm) and a lowered speckle contrast.

Electrical features
The output power is adjustable using a potentiometer or using the two modulation inputs for analog and TTL.

Faraday isolator
The source has an integrated Faraday isolator in order to protect the laser from back reflections.

Fiber cable
The source is fiber-coupled to a single-mode fiber cable. As a result the beam profile is rotationally symmetric with Gaussian intensity distribution. The fiber cable is equipped with an FC APC type connector (8°-polish). The fiber cable has a strain-relief and a protective sleeving (Ø 3 mm). Standard cable length is 150 cm.

Options:

Polarization-maintaining fiber
Core-centered (single-mode only)
Other connector types including FC PC, DIN or AVIO, or E2000
Other fiber cable lengths
Incorporated vacuum feed-through

Laser safety
The laser safety is conform to IEC 825 / EN 60825-1.

Interlock chain for the remote deactivation of the laser
Laser power-up is only possible using the key switch
LED status indicator for “Laser ON”
For a quick start the laser is shipped with a interlock connector type BC0106F-iLCK

An OEM version is available as type 51nanoFi-N without key switch or interlock which is not conform to EN 60825-1.

A version without Faraday isolator is available here.