PD300R-IR 300 mW Germanium Photodiode Sensor

Products

		Compare	Model	Compatibility	sortOrder	rankScore	ranking	Drawings, CAD & Specs		Aperture Size	Spectral Range	Maximum Average Power	Response Time	Availability	Featured Item	Price		Brand
		7Z02439 PD300R-IR Photodiode Power Sensor, Germanium, 5 nW to 300 mW, Ø5 mm, 700-1800 nm, Round $1,138 In Stock	7Z02439 PD300R-IR Photodiode Power Sensor, Germanium, 5 nW to 300 mW, Ø5 mm, 700-1800 nm, Round	UNIVERSAL	0.0	1.0	0.0		0.0	Ø5 mm	700-1800 nm	300 mW	0.2 s	In Stock		$1,138		Ophir

Show All

Specifications

Aperture Size

Ø5 mm
Material

Germanium
Spectral Range

700-1800
Power Range

Filter in: 2 µW - 300 mW
Filter out: 5 nW - 30 mW
Maximum Average Power Density

Filter in: 50 W/cm²
Filter out: 10 W/cm²
Maximum Pulse Energy

Filter in: 2 µJ
Filter out: 0.75 µJ

Response Time

0.2 s
Cable Length

1.5 m
CE Compliance

Yes
UKCA Compliance

Yes
China RoHS Compliance

Yes

Features

Measuring Very Low Laser Powers with a Photodiode Sensor

In this short “Basics” video, we review in general the use of photodiode sensors for measuring very low laser powers.

Effects of Incidence Angle on Measurements

In this video, you will learn to what degree a beam’s incidence angle matters, and for which sensor types this should be taken into account.

Frequently Asked Questions

What does the PD300 "Background Subtraction" do?
Answer
Ophir's Photodiode PD300 and PD300-1W sensors offer automatic background subtraction so the measurement is not sensitive to room light. With "filter out" (i.e. the external filter removed for low light measurements), 2 separate detector elements are visible. The beam to be measured is incident only on the outer of the 2 detectors, but background light reaches both detectors. The instrument will show the power measured by the outer detector minus that measured by the inner detector.This patented method cancels out 95% - 98% of background light under normal room conditions, even if it is constantly changing.

How do I take off the removable filter from the PD300?
Answer

Removing External Filter from PD300:

Step 1 – Starting position

Step 2

Step 3

Can a lost PD300 filter be replaced?
Answer
Technically it could be replaced, but it is not just a matter of replacing the filter. Since the PD300 is a "calibrated" sensor it requires that the filter also be "calibrated". Especially since the PD300 response varies with wavelength, it requires that both the PD300 and the filter be calibrated over the entire spectral range with a monochromator. Because of the cost to calibrate the replacement filter with the PD300 sensor, we recommend purchasing a new PD300 sensor when a replacement filter is needed.

The total error when using a PD-300 head is listed as +/- 3%. Is that 3% of the reading or 3% of the total range?
Answer
It's +/-3% of the reading from full scale down to 5% of full scale. Below 5% of full scale one should switch to next range down for the best accurate linear results.

Do I need to recalibrate my instrument? How often must it be recalibrated?
Answer
Unless otherwise indicated, Ophir sensors and meters should be recalibrated within 18 months after initial purchase, and then once a year after that.

Can I use a sensor from the PD300 family to measure average power of pulsed lasers?
Answer
In general yes, but several technical issues need to be kept in mind (most of which are results of the fast physical response time of these sensors):
- The pulse rate should be more than about 30Hz, otherwise the reading is unstable. At higher pulse frequencies, the sensor will respond as if the beam were CW.
- It is possible for a pulsed beam to have average power within the sensor spec and yet have the energy of the pulses themselves be high enough to cause a momentary saturation of the sensor. It is important to be sure that pulse energy is also within sensor spec (the parameter "Max pulse energy" is included in all specs for the PD300 family, for just this reason).
- The beam diameter should be no less than about 1mm .
- The average power and power density restriction in the spec should not be exceeded
Note: At the maximum pulse energy limit given in the spec, the reading will be saturated by about 5%, i.e. the reading will be about 5% lower than it should be. At 1/3 the maximum, the saturation will be about 1%.

Frequently Asked Questions

What does the PD300 "Background Subtraction" do?
Answer
Ophir's Photodiode PD300 and PD300-1W sensors offer automatic background subtraction so the measurement is not sensitive to room light. With "filter out" (i.e. the external filter removed for low light measurements), 2 separate detector elements are visible. The beam to be measured is incident only on the outer of the 2 detectors, but background light reaches both detectors. The instrument will show the power measured by the outer detector minus that measured by the inner detector.This patented method cancels out 95% - 98% of background light under normal room conditions, even if it is constantly changing.

How do I take off the removable filter from the PD300?
Answer

Removing External Filter from PD300:

Step 1 – Starting position

Step 2

Step 3

Can a lost PD300 filter be replaced?
Answer
Technically it could be replaced, but it is not just a matter of replacing the filter. Since the PD300 is a "calibrated" sensor it requires that the filter also be "calibrated". Especially since the PD300 response varies with wavelength, it requires that both the PD300 and the filter be calibrated over the entire spectral range with a monochromator. Because of the cost to calibrate the replacement filter with the PD300 sensor, we recommend purchasing a new PD300 sensor when a replacement filter is needed.

The total error when using a PD-300 head is listed as +/- 3%. Is that 3% of the reading or 3% of the total range?
Answer
It's +/-3% of the reading from full scale down to 5% of full scale. Below 5% of full scale one should switch to next range down for the best accurate linear results.

Do I need to recalibrate my instrument? How often must it be recalibrated?
Answer
Unless otherwise indicated, Ophir sensors and meters should be recalibrated within 18 months after initial purchase, and then once a year after that.

Can I use a sensor from the PD300 family to measure average power of pulsed lasers?
Answer
In general yes, but several technical issues need to be kept in mind (most of which are results of the fast physical response time of these sensors):
- The pulse rate should be more than about 30Hz, otherwise the reading is unstable. At higher pulse frequencies, the sensor will respond as if the beam were CW.
- It is possible for a pulsed beam to have average power within the sensor spec and yet have the energy of the pulses themselves be high enough to cause a momentary saturation of the sensor. It is important to be sure that pulse energy is also within sensor spec (the parameter "Max pulse energy" is included in all specs for the PD300 family, for just this reason).
- The beam diameter should be no less than about 1mm .
- The average power and power density restriction in the spec should not be exceeded
Note: At the maximum pulse energy limit given in the spec, the reading will be saturated by about 5%, i.e. the reading will be about 5% lower than it should be. At 1/3 the maximum, the saturation will be about 1%.

Accessories

Customers that purchase the above items also consider the following items. Ophir-Spiricon meters and sensors include a standard manufacturers warranty for one year. Add a one year Extended Warranty to your meter or sensor, which includes one recalibration.

Description	Compatibility	Avail.	Price
7Z08229 FC Fiber Connector Adapter, Power and Energy Sensors	UNIVERSAL	In Stock	$153
7Z08226 ST Fiber Connector Adapter, Power and Energy Sensors	UNIVERSAL	In Stock	$264
7Z08227 SC Fiber Connector Adapter, Power and Energy Sensors	UNIVERSAL	In Stock	$302
1G01236A SMA Fiber Connector Adapter, Power and Energy Sensors	UNIVERSAL	In Stock	$74
1G02259 Fiber Adapter Mounting Bracket, PD300R/FPS-1 Photodiode Sensors	UNIVERSAL	In Stock	$135
1G02260 Female SM1 to SM1 Adapter	UNIVERSAL	In Stock	$104
7E01125A Optical Sensor Cable, 5 m Length, Connect PD300 to Power Meter	UNIVERSAL	Contact Us	$129
7E01125B Optical Sensor Cable, 10 m Length, Connect PD300 to Power Meter	UNIVERSAL	In Stock	$219
XWAR-SENSOR Extended Warranty for Sensor	UNIVERSAL	Contact Us	$475

300 mW Germanium Photodiode Sensor with Ø5 mm Aperture

300 mW Germanium Photodiode Sensor with Ø5 mm Aperture

Overview

Products

Specifications

Features

Measuring Very Low Laser Powers with a Photodiode Sensor

Effects of Incidence Angle on Measurements

Frequently Asked Questions

Frequently Asked Questions

Accessories

Resources

Data Sheets

Catalogs

Drawings & CAD

Videos

Technical Articles

Technical Notes

Tutorials

Have questions? Require assistance?

Product Comparison

300 mW Germanium Photodiode Sensor with Ø5 mm Aperture

300 mW Germanium Photodiode Sensor with Ø5 mm Aperture

Overview

Products

Specifications

Features

Measuring Very Low Laser Powers with a Photodiode Sensor

Effects of Incidence Angle on Measurements

Frequently Asked Questions

Accessories

Resources

Data Sheets

Catalogs

Drawings & CAD

Videos

Technical Articles

Technical Notes

Tutorials

Related Products

Have questions? Require assistance?