Ophir pyroelectric laser joule meters use innovative, patented technology which facilitates accurate and repeatable laser measurements of pulses over an extensive range of conditions including long pulses to 20 ms and repetition rates up to 25 KHz.
To access addiitonal information from the Ophir website, click on Pyroelectric Energy Sensors .
Pyroeletric Energy Sensors - 0.2 µJ to 10 mJ
|
Model |
PE10-C-OP
|
| Absorber Type |
Metallic (sensitive) |
| Spectral Range (µm) |
0.15 to 12 |
| Surface Reflectivity % Approx. |
50 |
| Calibration Accuracy +/-% (a) |
3 |
| Pulse Energy Density, Maximum (J/cm2) |
0.1 J/cm2 for PW < 100ns, 0.2 J/cm2 for PW 1 µs, 3 J/cm2 for PW 300 µs |
| Linearity with Energy +/- |
±2% for energy > 10% of full scale |
| Maximum Average Power |
2 W |
| Power Density, Maximum Average (W/cm2) |
50 |
| Active Diameter (mm) |
12 |
| Power Range (W) |
up to 2 |
| Operating Temperature |
15 to 28ºC, RH< 80% |
| Weight (kg) |
0.25 |
| Max Pulse Width Setting |
1 µs |
30 µs |
| Energy Scales |
10 mJ to 2 µJ |
10 mJ to 20 µJ |
| Lowest Measureable Energy µJ (b)(c) |
1 |
1 |
| Max Pulse Width (µs) |
1 |
30 |
| Maximum Repetition Rate |
25 kHz |
5 kHz |
| Noise on Lowest Range µJ |
0.1 |
0.15 |
| Additional Error with Frequency % |
±2% to 15kHz,
±3% to 25kHz |
±1% to 5kHz |
(a) Calibrated curve is checked and adjusted at the following wavelengths (0.193, 1.064, 0.35 µm). For other wavelengths there is additional calibration error. 240-800 nm add ±4%, 2-3 µm add ±8%, 10.6 µm add ±15%.
(b) With the "user threshold" setting set to minimum. For other settings, the spec is for >10% of full scale or greater than twice the "user threshold", whichever is greater. The user threshold is available with Nova II, Vega or Juno. For other meters, the threshold is set to minimum and the linearity spec is > 10% of full scale. The PE-C series will only operate with Nova or Orion meters with an additional adapter Ophir P/N 7Z08272. The user threshold feature allows adjustment of the internal threshold up to 25% of full scale if desired to avoid false triggering in noisy environments. The user threshold setting represents the approximate minimum energy for pulse widths below 50% of the pulse width setting. For longer pulse widths, the actual minimum may be higher. For highest accuracy, it is recommended to zero the sensor against the meter the first time it is used with a particular meter.
(c) A shock absorbing mounting post is available for situations in which sensor is mounted on a surface subject to shock or vibration. This can prevent false triggering and allow working at lower minimum energies.
Pyroeletric Energy Sensors - 8 µJ to 10 J
|
Model |
PE50-C-OP
|
| Absorber Type |
Metallic (high rep rate) |
| Active Diameter (mm) |
46 |
| Spectral Range (µm) |
0.15 to 3 |
| Surface Reflectivity % Approx. |
50 |
| Calibration Accuracy +/-% (a) |
3 |
| Max Pulse Width setting (b) |
2 µs |
30 µs |
500 µs |
1 ms |
5 ms |
| Energy Scales (mJ) |
10J to 200 µJ |
10J to 200 µJ |
10J to 2 mJ |
10J to 2 mJ |
10J to 2 mJ |
| Lowest Measurable Energy µJ (c,d) |
10 |
10 |
60 |
80 |
100 |
| Max Pulse Width (ms) |
0.002 |
0.03 |
0.5 |
1 |
5 |
| Maximum Repetition Rate |
10 kHz |
5 kHz |
900 Hz |
450 Hz |
100 Hz |
| Noise on Lowest Range (µJ) |
0.5 |
1 |
6 |
10 |
20 |
| Additional Error with Frequency (%) |
±2% to 2 kHz; ±4.5% to 5 kHz; |
±2% to 5 kHz |
±2% to 750 Hz |
±2% to 400 Hz |
±1% to 80 Hz |
| Linearity with energy for > 10% of full scale (c) |
±2% |
| Power Density, Maximum Average (W/cm2) |
20 |
| Maximum Average Power (d) |
up to 15W, 25W with optional heat sink |
| Pulse Energy Density, Maximum (J/cm2) @ 1064 nm |
0.1 @ <100 ns,
0.2 @ 1 µs,
2 @ 300 µs,
6 @ 2 ms |
| Uniformity over surface |
±2% over central 50% of aperture |
| Operating Temperature |
15 to 28ºC, RH< 80% |
| Weight (kg) |
0.25 |
|
Model |
PE25BF-C-OP
|
PE50BF-C-OP
|
| Absorber Type |
BF (high damage threshold) |
| Active Diameter (mm) |
24 |
46 |
| Spectral Range (µm) |
0.15 to 3, 10.6 (f) |
| Surface Reflectivity % Approx. |
20 |
| Calibration Accuracy +/-% (a) |
3 |
| Max Pulse Width setting (b) |
1 ms |
5 ms |
10 ms |
20 ms |
1 ms |
5 ms |
10 ms |
20 ms |
| Energy Scales (mJ) |
10 J to 2 mJ |
| Lowest Measurable Energy µJ (c,d) |
60 |
120 |
120 |
200 |
120 |
600 |
600 |
600 |
| Max Pulse Width (ms) |
1 |
5 |
10 |
20 |
1 |
5 |
10 |
20 |
| Maximum Repetition Rate |
250 Hz |
50 Hz |
40 Hz |
20 Hz |
250 Hz |
50 Hz |
40 Hz |
20 Hz |
| Noise on Lowest Range (µJ) |
10 |
20 |
20 |
40 |
30 |
150 |
150 |
150 |
| Additional Error with Frequency % |
±1% to 250 Hz |
±1% to 50 Hz |
±1% to 40 Hz |
±2% to 20 Hz |
±1% to 250 Hz |
±1% to 50 Hz |
±1% to 40 Hz |
±2% to 20 Hz |
| Linearity with energy for > 10% of full scale (c) |
±2% |
| Power Density, Maximum Average (W/cm2) |
20 |
| Maximum Average Power (W) (d) |
up to 15W, 25W with optional heat sink |
| Pulse Energy Density, Maximum (J/cm2) @ 1064 nm |
<100 ns @ 0.8;
1 µs @ 1;
300 µs @ 5;
2 ms @ 10 |
| Uniformity over surface |
±2% over central 50% of aperture |
| Operating Temperature |
15 to 28ºC, RH< 80% |
| Weight (kg) |
0.25 |
(a) Calibrated curve is checked and adjusted at the following wavelengths. For other wavelengths there is additional calibration error (max ±2%).
PE25BF-C: Specified wavelengths: 193nm, 248-266nm, 355nm, 532nm, 1064nm and 2940nm.
PE50-C: Specified wavelengths: 248-266nm, 355nm, 1064nm and 2940nm.
PE50BF-C: Specified wavelengths: 193nm, 248-266nm, 355nm, 532nm, 1064nm and 2940nm.
(b) With the Laserstar, Pulsar, USBI Quasar and Nova or Orion with adapter only 2 of the 5 pulse width settings are available. For the PE-C models the 30 µs and 1 ms settings and for the PE-BF models the 1 ms and 10 ms settings.
(c) With the "user threshold" setting set to minimum. For other settings, the spec is for >10% of full scale or greater than twice the "user threshold", whichever is greater. The user threshold is available with Nova II, Vega or Juno. For other meters, the threshold is set to minimum and the linearity spec is > 10% of full scale. The PE-C series will only operate with Nova or Orion meters with an additional adapter Ophir P/N 7Z08272. The user threshold feature allows adjustment of the internal threshold up to 25% of full scale if desired to avoid false triggering in noisy environments. The user threshold setting represents the approximate minimum energy for pulse widths below 50% of the pulse width setting. For longer pulse widths, the actual minimum may be higher. For highest accuracy, it is recommended to zero the sensor against the meter the first time it is used with a particular meter.
(d) A shock absorbing mounting post is available for situations in which sensor is mounted on a surface subject to shock or vibration. This can prevent false triggering and allow working at lower minimum energies. Note however, that in this case the maximum average power will be reduced to 10W without heat sink and 20W with heat sink.
(e) The 3000 nm setting is calibrated for 10.6 µm as well. To measure CO2 laser, set to the 3000 nm setting. The additional error for 10.6 µm is ±5%.
High Energy Pyroeletric Energy Sensors - 20 µJ to 10 J
|
Model |
PE25BF-DIF-C-OP
|
PE50BF-DIF-C-OP
|
| Absorber Type |
BF with Diffuser (complete calibration curve, high damage threshold) |
BF with Diffuser (complete calibration curve, highest damage threshold) |
| Spectral Range (µm) |
0.19 to 2.2 |
0.19 to 2.2, 2.94 |
| Active Diameter (mm) |
20 |
35 |
| Surface Reflectivity % Approx. |
25 |
| Calibration Accuracy +/-% (a) |
3 |
| Max Pulse Width setting (b) |
1 ms |
5 ms |
10 ms |
20 ms |
10 ms |
20 ms |
20 ms |
20 ms |
| Energy Scales (J) |
10 J to 2 mJ |
10 J to 20 mJ |
10 J to 2 mJ |
10 J to 20 mJ |
| Lowest Measurable Energy µJ (c,d) |
100 |
200 |
200 |
300 |
200 |
800 |
800 |
800 |
| Max Pulse Width (ms) |
1 |
5 |
10 |
20 |
1 |
5 |
10 |
20 |
| Maximum Repetition Rate |
250 Hz |
50 Hz |
40 Hz |
20 Hz |
250 Hz |
50 Hz |
40 Hz |
20 Hz |
| Noise on Lowest Range µJ |
15 |
30 |
30 |
60 |
40 |
200 |
200 |
200 |
| Additional Error with Frequency % |
±1% |
±1% |
±1% |
±2% |
±1% |
±1% |
±2% |
±2% |
| Linearity |
±2% for energy > 10% of full scale (c) |
| Power Density, Maximum Average (W/cm2) |
120 |
200 |
| Power Range |
up to 20W, 30W with optional heat sink |
| Pulse Energy Density, Maximum |
3 J/cm2 for PW < 100ns, 25 J/cm2 for PW 300 µs, 50 J/cm2 for PW 2 ms at 1064 nm |
4 J/cm2 for PW < 100ns, 40 J/cm2 for PW 300 µs, 80 J/cm2 for PW 2 ms at 1064 nm |
| Uniformity over surface |
±2.5% over central 10 mm |
±2.5% over central 20 mm |
| Operating Temperature |
15 to 28ºC, RH< 80% |
| Weight (kg) |
0.25 |
(a) Calibrated curve is checked and adjusted at the following wavelengths. For other wavelengths there is additional calibration error.
PE25BF-DIF-C: Specified wavelengths: 193nm, 248-266nm, 355nm, 532nm and 1064nm. Additional error at 193nm ±6%. Max additional error at other wavelengths not specified above: ±3%. 193nm reading may need 1min irradiation to stabilize.
PE50-DIF-C: Specified wavelengths: 193nm, 248-266nm, 355nm, 532nm, 1064nm and 2940nm. Additional error at 193nm ±6%. Max additional error at other wavelengths not specified above: ±3%. 193nm reading may need 1min irradiation to stabilize.
(b) With the Laserstar, Pulsar, USBI and Quasar only 2 of the 5 pulse width settings are available. For the PE-C models the 30 µs and 1 ms settings and for the PE-BF models the 1 ms and 10 ms settings.
(c) With the "user threshold" setting set to minimum. For other settings, the spec is for >10% of full scale or greater than twice the "user threshold", whichever is greater. The user threshold is available with Nova II, Vega or Juno. For other meters, the threshold is set to minimum and the linearity spec is > 10% of full scale. The PE-C series will only operate with Nova meters with an additional adapter Ophir P/N 7Z0272. The user threshold feature allows adjustment of the internal threshold up to 25% of full scale if desired to avoid false triggering in noisy environments. The user threshold setting represents the approximate minimum energy for pulse widths below 50% of the pulse width setting. For longer pulse widths, the actual minimum may be higher.
(d) A shock absorbing mounting post is available for situations in which sensor is mounted on a surface subject to shock or vibration. This can prevent false triggering and allow working at lower minimum energies. Note however, that in this case the maximum average power will be reduced to 13W without heat sink and 25W with heat sink.
