Compare Model Drawings, CAD & Specs Availability Price
Integrating Sphere Detector, Collimated Beam, 2.0 in., 800-1650 nm
$3,236
Integrating Sphere Detector, Collimated Beam, 3.3 in., 910-1650 nm
$3,965
Integrating Sphere Detector, Collimated Beam, 5.3 in., 860-1650 nm
$4,274
Integrating Sphere Detector, Collimated Beam, 2.0 in., 400-1100 nm
$3,511
Integrating Sphere Detector, Collimated Beam, 3.3 in., 400-1100 nm
$3,511
Integrating Sphere Detector, Collimated Beam, 5.3 in., 400-1100 nm
$4,761
Integrating Sphere Detector, Collimated Beam, 2.0 in., 200-1100 nm
$3,284
Integrating Sphere Detector, Collimated Beam, 5.3 in., 220-1100 nm
$4,317
Integrating Sphere Detector, Diverging Beam, 2.0 in., 910-1650 nm
$3,236
Integrating Sphere Detector, Diverging Beam, 3.3 in., 910-1650 nm
$3,853
Integrating Sphere Detector, Diverging Beam, 5.3 in., 930-1650 nm
$4,425
Integrating Sphere Detector, Diverging Beam, 2.0 in., 400-1100 nm
$3,344
Integrating Sphere Detector, Diverging Beam, 3.3 in., 400-1100 nm
$3,560
Integrating Sphere Detector, Diverging Beam, 5.3 in., 400-1100 nm
$4,761
Integrating Sphere Detector, Diverging Beam, 2.0 in., 200-1100 nm
$3,143
Integrating Sphere Detector, Diverging Beam, 5.3 in., 220-1100 nm
$4,648

Features

Divergent vs. Collimating Beam Input

Depending on the beam divergence characteristics of the light source, Newport offers two different flavors of sphere detectors. Use the 819D series detectors for a diverging light source, and use the 819C series for a collimated input beam. In the 819D series, the baffle is placed between the input port and the detector so that the undiffused beam does not hit the detector directly. When the collimated beam is measured, the baffle needs to be placed between the first reflection off of the internal wall of the sphere and the detector.

819D integrating sphere configuration is ideal for divergent beam source such as an output beam from a laser diode.

Why Integrating Sphere Detectors?

One of the major advantages of using an integrating sphere is to diffuse the input beam so that the detector readings are insensitive to errors caused by detector positioning or problems associated with overfilling, or saturation of the active area of the detector. The detector should see a completely diffused input field. Then, a key technical consideration, when deciding which configuration one has to choose, is whether the input beam will directly hit the detector, influencing the optical power at the detector. For this purpose, each integrating sphere includes a baffle.

Tightest Calibration Uncertainty

Calibrated integrating sphere detectors are available with a low noise Si, UV-enhanced Si or an InGaAs photodiode. The available sphere sizes are 2”, 3.3” or 5.3” diameters. To maintain accuracy and guarantee performance Newport recommends annual integrating sphere detector calibration. Every product includes a full spectral response calibration utilizing NIST-traceable standards calibrated with high-precision equipment maintained in Newport’s optical detector calibration facility. Tight calibration facility and process control allows the tightest calibration uncertainty in industry. Each detector is shipped with the calibration data, which is electronically stored inside the detector's EEPROM. A certificate of calibration as well as the actual calibration curves and data are shipped with each product. To maintain accuracy and guarantee performance Newport recommends annual photodiode detector calibration.

UV, Visible, and IR Wavelength Ranges Available

The spheres with a silicon photodiode are suitable for measurements ranging from 400 – 1100 nm, while the models with an InGaAs detector are suitable for approximately 800 – 1650 nm range. The UV version is optimized for wavelengths between approximately 200 - 400 nm, even though it is calibrated up to 1100 nm.

Advanced –CAL2 Models

The models that end with '-CAL2' suffix feature a detector with a built-in thermocouple and OD1 attenuator. When connected to power meter models 1830-R, 1918-R, 1936-R, or 2936-R, they will automatically recognize the attenuator On/Off position and the detector head temperature.

SMA Fiber Adapter on the North Pole

All the spheres come with an SMA fiber adapter on the North pole as a standard feature, allowing a small amount of light pickoff for wavelength measurement or any further analysis without affecting the overall system calibration. All sphere detectors are calibrated with the adapter already installed.

It is important to determine whether enough signal can be sent to the spectrometer or a monochromator.  A rough estimate on how much light will couple to the optical fiber can be obtained by taking the ratio between the core area or the effective mode area of the fiber and the surface area of the sphere, which can be very small.  We recommend using a spectrometer that accepts at least 400 to 600 um diameter fiber input.    

Note on User Modification of Configuration

Note that the system calibration is no longer valid if any component is changed from the original calibrated configuration. For a very high power level, elevated temperature of the integrating sphere system can affect the measurement accuracy, so the sphere must be properly cooled. Check with Newport for the complete list of integrating sphere detectors. For individual integrating spheres and accessories see Integrating Spheres and Accessories.