Fiber-coupled Lasers series 51nanoFI-S with Faraday isolator (PM)

Low coherence laser source with polarization-maintaining fiber cable

51nanoFi-S

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Low
Coherence

Faraday
Isolator

Features

Laser Diode Beam Sources of type 51nanoFI-S have reduced power noise, reduced coherence length and a lowered speckle contrast.

Integrated Faraday isolator for feedback protection (> 30 dB)
Reduced power noise: typ. < 0.15 % of P_o (RMS, Bandwidth < 1 MHz)
Reduced coherence length: Coherence length ≈ 300 µm
Reduced speckle contrast
Various wavelengths from 405 nm to 1550 nm
Laser output power up to 27 mW
Polarization-maintaining fiber cable (Polarization Extinction Ratio PER ≥ 23 dB (for λ < 600 nm ≥ 21 dB))
FC APC connector (8°-polish), optional DIN AVIO or E-2000, end caps for wavelengths < 635 nm
With interlock and key switch (conform to EN 60825-1)
Beam profile is rotationally symmetric with Gaussian intensity distribution

Alternative: Laser Diode Beam Source 51nanoFI-N (OEM version without key switch or interlock)

Description

The fiber-coupled Laser Diode Beam Sources of type 51nanoFI-S have reduced power noise (typ. < 0.15 % of P_o (RMS, Bandwidth < 1 MHz)), reduced coherence length (≈ 300 µm) and a lowered speckle contrast. Additionally sources of type 51nanoFI-S have an integrated Faraday isolator to protect the laser source from back-reflection.

Electrical features
The output power is adjustable using a potentiometer or using the two modulation inputs for analog and TTL. The electrical cable is 1.5 m long. There are two possible supply voltages 5 V or 12 V. Other electrical cables and connectors on request.

More details on electronics type: HP, H.

Fiber cable
The source is fiber-coupled to a polarization-maintaining fiber cable (standard, polarization extinction ratio > 23 dB). As a result the beam profile is rotationally symmetric with Gaussian intensity distribution and a linear state of polarization. The fiber cable is equipped with an FC APC connector (8°-polish). Fiber connectors with end caps are used for wavelengths < 635 nm. The fiber cables have strain-relief and protective sleeving (Ø 3 mm). Standard cable length is 150 cm.

Fiber Options:

Other connector types including DIN, AVIO or E2000
Other fiber lengths
Incorporated vacuum feed-through

Faraday isolator
Faraday isolators are used to protect the laser sources from back-reflection, which causes mode hopping, laser noise, frequency instability and a shorter laser lifetime. The Faraday isolator has a high isolation > 30 dB.

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”

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

Technical data

Fiber-coupled Lasers series 51nanoFI-S with Faraday isolator (PM)

Series

51nanoFI-S

Wavelength

405 nm - 1550 nm

Power noise

typ. < 0.15 % of P_o (RMS, BW < 1 MHz)

Coherence length

≈ 300 µm

Fiber cable

polarization-maintaining

Fiber cable length

1.5 m (standard)

Fiber connector type

FC APC (standard)

Supply voltage

5 V or 12 V

Electr. cable length

1.5 m (standard)

Connector type (5V)

Lumberg SV30 IEC 61076-2-106

Connector type (12V)

Lumberg SV40 IEC 61076-2-106

Cable type

3 x AWG 26 C UL

Modulation

analog and TTL

Operating temperature

15 - 35°C ± 0.5°C

Dimensions

Weight

Order options

Order Code	Wavelength	Typ.Output Power P_o	Supply Voltage	Fiber Type	Connector	End cap	Electronics Type	Laser Class	Casing Type
51nanoFI-S-405-1-Y07-P-12-4-28-0-150	405 nm	0.9 mW	12 V	Polarization-maintaining	FC APC	x	HP	2	S1
51nanoFI-S-405-12-M29-P-12-4-28-0-150	405 nm	12 mW	12 V	Polarization-maintaining	FC APC	x	HP	3B	S1
51nanoFI-S-445-15-G02-P-12-4-28-0-150	445 nm	15 mW	12 V	Polarization-maintaining	FC APC	x	HP	3B	S1
51nanoFI-S-520-6-O11-P-12-4-28-0-150	520 nm	6 mW	12 V	Polarization-maintaining	FC APC	x	HP	3B	S1
51nanoFI-S-635-1-H10-P-5-2-28-0-150	635 nm	0.9 mW	5 V	Polarization-maintaining	FC APC		H	2	S1
51nanoFI-S-640-15-H21-P-5-2-28-0-150	640 nm	15 mW	5 V	Polarization-maintaining	FC APC		H	3B	S1
51nanoFI-S-660-1-M01-P-5-2-28-0-150	660 nm	0.9 mW	5 V	Polarization-maintaining	FC APC		H	2	S1
51nanoFI-S-660-25-H26-P-5-2-28-0-150	660 nm	25 mW	5 V	Polarization-maintaining	FC APC		H	3B	S1
51nanoFI-S-785-10-Q06-P-5-2-28-0-150	785 nm	10 mW	5 V	Polarization-maintaining	FC APC		H	3B	S2
51nanoFI-S-808-16-G15-P-5-2-28-0-150	808 nm	16 mW	5 V	Polarization-maintaining	FC APC		H	3B	S1
51nanoFI-S-830-10-H19-P-5-2-28-0-150	830 nm	10 mW	5 V	Polarization-maintaining	FC APC		H	3B	S2
51nanoFI-S-850-15-TH11-P-5-2-28-0-150	850 nm	15 mW	5 V	Polarization-maintaining	FC APC		H	3B	S1
51nanoFI-S-980-2-TH4-P-5-2-28-0-150	980 nm	2 mW	5 V	Polarization-maintaining	FC APC		H	3R	S2
51nanoFI-S-1310-2-M14-P-5-2-28-0-150	1310 nm	2 mW	5 V	Polarization-maintaining	FC APC		H	1	S1
51nanoFI-S-1550-4-Q04-P-5-2-28-0-150	1550 nm	4 mW	5 V	Polarization-maintaining	FC APC		H	1	S1

Other types e.g. with single-mode fiber cable are available.

Technotes

Downloads

Article_51Nano.pdf (Technote)

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Please access the individual product pages (using the product configurator, the product list, order options or the search button if you have a complete order code). Here you will find specific downloads including technical drawings or stepfiles.