OMH
6700B

Product Features
Measures power and wavelength from 350 to 1100 nm
NIST traceable measurements

Silicon Power/Waveheads

Measures up to 30W optical power
Integrating sphere based measurements
Temperature controlled silicon
photodetectors
Free-space and fiber coupled measurements
Fiber exit port for external measurements(OMH-6780B, OMH-6790B, OMH-67452B only)

The OMH-6700B Silicon Power/Waveheads
provide flexibility to easily and accurately measure
the optical power and wavelength of laser sourcesfrom the blue to the near infrared spectrum. These
products incorporate ILX’s unique integrating spherebased power and wavelength measurement capability.
The OMH-6732B power/wavehead provides accurate
power and wavelength measurement from 350 to530nm while the OMH-6722B measures from 400
to 1100nm, with both measuring up to 1W opticalpower. The OMH-6780B and OMH-6790B power/
waveheads were developed specifically for pumplaser diodes with better wavelength measurement
accuracy, low polarization dependent response, andthe ability to make either connectorized or bare fiber
measurements. The OMH-67452B was designed
to measure up to 30W for high power fiber coupled
single emitters.

Measure with Confidence
The OMH-6700B Silicon Power/Waveheads arecalibrated to NIST traceable standards in ILX’s own
calibration laboratory where accuracy and traceability
are its primary concerns. ILX’s documented quality
system ensures conformance to continuous
traceability and ultimately your confidence in thepower/wavehead measurements.

Simplify Optical Measurements
Integrating spheres simplify optical power
measurements of laser diodes and LEDs by
eliminating measurement problems related to detector
saturation, alignment beam profile, polarization, andback reflection. Integrating spheres are inherently
insensitive to beam profiles, providing you with more
flexibility in laser type and launch conditions. Filtereddetectors on the interior of the sphere receive an
equal distribution of incident light, ensuring that thecalibration and resultant measurement accuracy areindependent of the beam profile.

Repeatable, Accurate Measurements
The detectors in the OMH-6700B power/
waveheads are temperature-controlled to ensure that
repeatable measurements are made independentof the measurement environment. Temperature
controlling the detectors increases the signal-to-noise
ratio, improving the accuracy of the measurements.

Measurement Flexibility
Each measurement head can be configured easily
for fiber-coupled measurements. A choice of adapters
is available for FC, SC, LC, ST, and DIN connectors.
Bare fiber measurements are also possible with abare fiber adapter. More flexibility was designed into
the heads with the addition of a fiber light exit port toconnect to an OSA or other measurement instrument(OMH-6780B/OMH-6790B/OMH-67452B only).

OMH
6700B

Specifications1
OMH-6722B

OMH-6732B

OMH-6780B

OMH-6790B

OMH-67452B

400 to 1100nm±1.0nm-20dBm<-0.03nm/°C(typical)

350 to 530nm±0.5nm-10dBm<-0.03nm/°C(typical)3

830 to 1100nm±0.2nm-10dBm<-0.03nm/°C(typical)4830 to 1100nm±0.2nm0dBm<-0.03nm/°C(typical)5800 to 1100nm+1.0 nm15,163 mW<-0.03nm/°C(typical)17

Power Range:6
Damage Threshold:Accuracy7
Operating Conditions:
Polarization Dependent Response:10
Measurement Repeatability:11
Entrance Aperture:
Numerical Aperture:
Sensor Type:
Noise:8-40 to +30dBm+42dBm-40 to +30dBm+42dBm-40 to +30dBm+42dBm-30 to +40dBm+42dBm3µW to 30W
50W±3.5%8------------------6mm---------Silicon
5nW p-p (typical) at±0.002dB±0.003dB
Fiber input, 2.54mm
0.1 to 0.3
Silicon
5nW p-p (typical)13±5.0%±0.002dB±0.003dB
Fiber input, 2.54mm
0.1 to 0.3
Silicon
50nW p-p (typical)13±5.0%±0.002dB

Linearity:14
Temperature Coefficient:
Fiber Exit Port:---------0.1% /°C (typical)4----------±3.5%9------------------6mm---------Silicon
5nW p-p (typical)12980nm---------0.1% /°C (typical)3----------+10°C to +40°C–20°C to +60°C<85% RH,
non-condensing
FC/PC, FC/APC,SC, ST, DIN, Bare
Fiber Holder
69mm (dia.) x 28mm(thick)
13.3 ounces+10°C to +40°C–20°C to +60°C<85% RH,
non-condensing
FC/PC, FC/APC,SC, ST, DIN, Bare
Fiber Holder
69mm (dia.) x 28mm(thick)
13.3 ounces

WAVELENGTH MEASUREMENT
Wavelength Range:
Accuracy:2Detection (minimum power required):Temperature Coefficient:

Silicon Power/Waveheads

POWER MEASUREMENT

Fiber input, 2.54mm
0.1 to 0.3
Silicon<150nW p-p18±0.05dB, ±5nW
-0.15% /°C (typical)4
For 1W of input
power, 1µW (nominal)
output (60dB outputattenuation);
62.5µm FC/PC
receptacle±0.05dB, ±50nW-0.15% /°C (typical)5
For 10W of input
power, 10µW (nominal)(60dB attenuation);
62.5µm FC/PC
receptacle±0.05dB, ±180nW-0.15% /°C (typical)560 dB attenuation
using 62.5um FC/PC
receptable+10°C to +40°C–20°C to +60°C<85% RH,
non-condensing
FC/PC, FC/APC, LC, SC,
Bare Fiber Holder,
Fiber Holder
86mm (H) x 86mm (W)(thick)2.95 lbs. (1.34 kg)+10°C to +40°C–20°C to +60°C<85% RH,
non-condensing
FC/PC, FC/APC, LC, SC,
Bare Fiber Holder,
Fiber Holder
86mm (H) x 86mm (W)x 100mm (D)2.95 lbs. (1.34 kg)+10°C to +40°C–20°C to +60°C<85% RH,
non-condensing
FC/PC, FC/APC, LC, SC,
Bare Fiber Holder

GENERAL

Environment
Operating Temperature:
Storage Temperature:
Humidity:
Compatible Connector Types:
Dimensions:
Weight:NOTESORDERING INFORMATION

Typical values provide supplemental information beyond guaranteed specification limits.
12345678910111213141516171886mm (H) x 86mm (W)x 100mm (D)
3.2 lbs.

Unless otherwise noted, all specifications measured at 23°C ±3°C after one-hour warm-up period. Fiber optic headspecifications applicable for 9/125 to 110/140µm fiber, NA = 0.3.
Minimum sensitivity -40dBm from 800 to 1100nm.
Measured with a 371nm source at 1mW output.
Measured with a 975nm source at 80mW optical input.
Measured with a 920nm source at 1W optical input.
Typical photodiode response is linear over a 60 to 70dB range between the effects of thermal noise and saturationof the diode. ILX power meter heads are calibrated above the noise threshold and linearity is verified in order toproduce an accurate calibration for optical power measurements to 10W. (30W for 67452B)
Includes traceability to NIST. Calibrated to 21°C ±3°C at 10nm intervals. Uncertainty evaluated according to NISTTechnical Note #1297: “Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results.”
Accuracy specifications are verified with the wavelength entered manually (instrument not in auto-wavelengthmode).
Manual  mode. Add +0.5% for auto- mode. Add +0.5% for  < 440nm and > 1000nm.
For input power > 100 mW, add +0.05%/100 mW.
Within the specified operating temperature range. Beam centered in entrance aperture and pointing within ±10°.
Variation in meter response associated with changes in input polarization state. Specification is for flat endface(cleaved) fiber. Add PDL for connectors or angled-cleave measurements. For example, 8° cleave in SMF-28 fiber
typically adds 0.015dB PDL.
Variation in response from removing and replacing the fiber or connector into the detector head. Includes effects ofvariation in fiber orientation and bare fiber extension 1 to 5mm from the holder. Add ±0.003dB for NA >0.20.
Measured over one minute, in gain range seven, medium filter mode.
Measured over one minute, in medium filter mode at 975nm.
Total variation from straight-line response. Valid across range limits if measured in auto-range mode. Measured at
920nm, 23±5°C, constant temperature. Add ±0.005dB/dB for input power >20dBm.
Absolute wavelength measurement accuracy is specified for the range of 830nm to 1100nm
This instrument’s wavelength measure technology provides “mean” wavelength i.e., all spectral contributions towhich detectors are sensitive are measured. Stability of wavelength measurement increases with source linewidth,i.e., wavelength measurement not stable for linewidths <1GHz.
Measured with a 975 nm source at 1W optical input for the OMH-67452B.
Measure over 1 minutes, in medium filter mode at 975 nm.

In keeping with our commitment to continuing improvement, ILX Lightwave reserves the right to change
specifications without notice or liability for these changes.

OMM-6810B Optical Power and Wavelength Meter (includes GPIB Interface)
LPA-9082 Laser Parameter Analyzer (200/400mA)
LPA-9084 Laser Parameter Analyzer (2/4A)
OMH-6722B Silicon Power/Wavehead, 400-1100nm
OMH-6732B Short Wavelength Power/Wavehead, 350-530nm
OMH-6780B 1W Power/Wavehead, 830 to 1100nm
OMH-6790B 10W Power/Wavehead, 830 to 1100nm
OMH-67452B 30W Power/Wavehead, 800 to 1100nm
Accessories
OMH-6722B and OMH-6732B
AO271 FC Adapter Assembly
AO272 SC Adapter Assembly
AO273 ST Adapter Assembly
AO276 DIN Adapter Assembly
AO120 Bare Fiber Adapter Ring
MK-650 Head Mounting Kit
BF-820 Bare Fiber Holder (6795B also requires CA-120)
OMH-6780B and 6790B
BF-820 Bare Fiber Holder (requires adapter ring)
CA-100 FC Adapter
CA-120 Bare Fiber Adapter Ring
CA-150 SC Adapter
CA-20001 LC Adapter
CA-500 Accessory Case
OMH-67452B
BF-820 Bare Fiber Holder
CA-100 FC Adapter
CA-120 Bare Fiber Adapter Ring
CA-150 SC Adapter
CA-20001 LC Adapter

For information call
P.O. Box 6310 Bozeman, MT 59771 • FAX: 406-586-9405

www.ilxlightwave.com

1-800-459-9459
International Inquiries: 406-556-2481

email: sales@ilxlightwave.com

REV04 052809