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HighFinesse-Ångstrom Wavelength meters

WS Ultimate Precision

Wavelength measurements with highest accuracy

The WS Ultimate is a sensitive and compact wavelength meter for laser sources. It is capable of measuring pulsed and continuous laser sources. Both, optical elements and assigned electronics are housed in a compact, thermally isolated casing.

 Standard measurement range 350-1120 nm
 Relative accuracy up to 10-8
 Measurement speed 150 Hz (Data collection 400 Hz)
 Capable of measuring cw and pulsed lasers
 Various options available

Easy Set-up

The wavelength meter is connected to the PC via the USB interface. After installation of the supplied software, the device directly is ready for measurement.

Guaranteed Future

The design of the wavelength meter "WS Ultimate" permits the integration of additional optical components and software modules, allowing custom solutions for customer specific application even years after purchase.
For further particulars on the available options we refer you to our » options page.

Technical Data  WSU/30 WSU/10 WSU/2 
Measurement range [nm]   Standard

UV

IR
350-1120

248-1100

800-1750
yes

no

no
yes

no

yes
yes

no

no
Absolute accuracy (7)

192-370 nm [pm] (1)

370-1100 nm [MHz]

1100-2250 nm [MHz]
0.1

30

20
0.1

10 (5)

10 (5)
0.1

2 (6)

no
Quick coupling accuracy (with MM fiber) [MHz] 100 100 100
Measurement Resolution [MHz] 5 1 (5) 0.5 (6)
Linewidth option (3)

Accuracy [MHz] (4)

Max. bandwidth [GHz]
100

8
100

8
100

8
Measurement speed [Hz] (8)
(depending on PC hardware and settings)


Data aquisition

Wavelength calculation

Linewidth calculation

Pattern display
400

150

100

50
400

150

100

50
400

150

100

50
Required input energy [µJ]
(or power [µW]) (9)


Standard

UV

IR
0.02-15

0.02-10

2-200
0.02-15

no

2-200
0.02-15

no

no
Fizeau interferometers (2)

FSR [GHz] 2 (15-20) 2 (15-20) 2 (15-20)
Coupling fiber diameter [µm] 400 µm or SM fiberset
Calibration Stabilized HeNe laser or any other well known laser source dv <3 MHz Any well known laser source dv <1 MHz
Calibration period ≤10 hours ≤1 hour ≤2 minutes
Warm-up time >30 minutes
Dimensions L x W x H [mm] 360 x 200 x 120
Weight [kg] 6.3
Interface High-speed USB 2.0 connection
Power supply Power consumption <2.3 W, supply directly via USB cable; IR-II: external power supply included; IR-I and WSU via USB or external power supply possible

(1) With multi mode fiber   (2) Values for wide-/fine-mode   (3) Only for standard range
(4) But not better than 5% of the linewidth   (5) ±200 nm around calibration wavelength   (6) ±2 nm around calibration wavelength
(7) According 3σ criteria   (8) Without autocalibration usage   (9) The cw power interpretation in [µW] compares to an exposure of 1s (generally the energy needs to be divided by the exposure time to obtain the required power)  

Available options for wavelength meters

» Linewidth option - L
» Double-pulse option - DP
» Multi channel switcher (up to eight channels) - MC
» Laser-feedback-PID-controller - PID
» External TTL trigger option - TTL

Included in Delivery WSU-30, WSU-10 (standard version)

Optical unit WSU-30, WSU-10
USB connection cable (optical unit - computer)
1x 400µm Multimode fiber 5 m
2 singlemode fiber on choice (400nm, 460nm, 630nm, 780nm, 980nm avaible)
2x Collimators for coupling light into fibers
CD-ROM with userfriendly software for operation and measurement
Operation manual
Certificate

Included in Delivery WSU-2 (standard version)

Optical unit WSU-2
USB connection cable (optical unit - computer)
1x 400µm Multimode fiber 5 m
2 singlemode fiber on choice (400nm, 460nm, 630nm, 780nm 980nm avaible)
2x Collimators for coupling light into fibers
CD-ROM with userfriendly software for operation and measurement
Operation manual
Certificate
1 x SM-switch 1x2

Links

» WSU Product Sheet [PDF-Version, 181 kB]
» WSU Autocalibration Sheet [PDF-Version, 354 kB]


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Last update: 13.01.2014 © HighFinesse GmbH 2014