Stellar-PD Photodiode Laser Power Meter
Photodiode power measurement from 500 pW to 3 W across 250–1800 nm, with round and square probes and fiber adapters.
Photodiode power measurement from 500 pW to 3 W across 250–1800 nm — for weak beams, short wavelengths and fiber-coupled setups where a thermopile is the wrong instrument.
Why this series
- Power range from 500 pW up to 3 W depending on probe and filter setting
- Silicon probes 350–1100 nm; UV versions from 250 nm; InGaAs probes 800–1700 nm
- Round and square probe formats, 10 mm or 5 mm aperture
- Automatic background-light rejection on the SA square probes — useful in lit rooms
- Auto and manual ranging, response time under 0.1 s
- Calibration uncertainty ±3%, linearity ±0.5%, wavelength resolution 1 nm
- Optional fiber adapters: ST, FC, LC, SC
- External quick-mount attenuator for higher power
- NIST-traceable calibration with a convenient self-calibration mechanism
Probes
Representative models. The 1.5 W and 3 W versions extend the top of each range; the UV0 versions extend it downwards to 250 nm.
| Model | Detector | Wavelength | Aperture | Power range |
|---|---|---|---|---|
| Stellar-PD300C | Silicon | 350–1100 nm | Ø10 mm round | 500 pW – 300 mW |
| Stellar-PD300C-3W | Silicon | 350–1100 nm | Ø10 mm round | 1 nW – 3 W |
| Stellar-PD300C-UV0 | Silicon | 250–1100 nm | Ø10 mm round | 100 pW – 15 mW |
| Stellar-PD300SA | Silicon | 350–1100 nm | 10 × 10 mm square | 500 pW – 300 mW |
| Stellar-PD300SA-3W | Silicon | 350–1100 nm | 10 × 10 mm square | 1 nW – 3 W |
| Stellar-PD300CE-IRA | InGaAs | 800–1700 nm | Ø5 mm round | 500 pW – 200 mW |
| Stellar-PD300SAE-IRA | InGaAs | 800–1700 nm | 5 × 5 mm square | 500 pW – 200 mW |
| Stellar-PD300C-IRA | InGaAs | 800–1700 nm | Ø10 mm round | 500 pW – 300 mW |
Meter specifications
| Display | Color LCD with Chinese and English menus |
|---|---|
| Battery | High-capacity lithium-ion, with burn-in protection |
| Ranging | Automatic and manual |
| Output | USB-B with PC monitoring software |
| Calibration | NIST-traceable, with user self-calibration |
| Housing | Metal, with bracket for bench placement |
Where it is used
- Laser medicine and biomedical imaging
- Semiconductor and microelectronics manufacturing
- Optical communication and sensing; component and coating inspection
- LiDAR and laser ranging
- Precision laser processing at low power
Measuring microwatts or nanowatts?
For beams this weak, the probe choice depends on wavelength, fiber type and ambient light. Send us the details and we will match the probe and attenuator. Send an inquiry →