Long-distance laser rangefinders have characters with low power consumption, small size and high in accuracy and safety. Currently, 1064nm emission wavelength, generally applied into laser rangefinders, is harmful for our retina and will bring hidden problems for our safety. Therefore, it is necessary to develop 1535nm eye-safe lasers and it will become a inevitable trend for future industry in photon-electricity field. 1535nm eye-safe laser has applied in hand-held laser rangefinders, pods, and frontier monitoring.
FIGURE 1
Ranging process of laser rangefinders is showing as following. It consists of four parts-laser transmitting module, optical transceiver system, laser receiving system, and signal processing system. Erbium glass solid-state lasers, has applied into eye-safe laser rangefinders, is able to produce 1535nm laser with hundreds μJ, low repetition rate and narrow pulse width. To get accurate ranging information, it takes InGaAs APD as detector and TDC to measure flying time.
FIGURE 2
Erbium Tech has developed eye-safe lasers with small size, high peak power and stability for laser rangefinders. Its pulse energy ranges from 100μJ to 500μJ. And there are two options for packaging-TO packaging and traditional packaging. It has gained high reputation from our customers. Parameters of 1535nm eye-safe lasers are shown as following:
Parameters Type# |
EL-201 (100μJ) |
EL-202 (200μJ) |
EL-203 (300μJ) |
EL-204 (400μJ) |
EL-205 (500μJ) |
Wavelength |
1535 nm |
1535 nm |
1535 nm |
1535 nm |
1535 nm |
Laser Energy(Min./Typ.) |
132 μJ / 134 μJ |
200 μJ / 240 μJ |
300 μJ / 320 μJ |
400 μJ / 420 μJ |
480 μJ / 510 μJ |
Laser Pulse Width, Typ.(FWHM) |
3 . 5 ns |
3.5 ns |
3.5 ns |
3.5 ns |
3.5 ns |
Pulse Repetition Rate |
1~20 Hz |
1~10 Hz |
1~20 Hz |
1~20 Hz |
1~10Hz |
Pulse Energy Stability |
10% |
10% |
10% |
10% |
10% |
Beam diameter |
0 .2 mm |
0.2 mm |
0.2 mm |
0.2 mm |
0.2 mm |
Beam Divergence |
<10 mrad |
<10 mrad |
<10 mrad |
<10 mrad |
<10 mrad |
Spots mode |
TEM00 |
TEM00 |
TEM00 |
TEM00 |
TEM00 |
Operating Temperature |
-45 ℃~+65 ℃ |
-45 ℃~+65 ℃ |
-45 ℃~+65 ℃ |
-45 ℃~+65 ℃ |
-45 ℃~+65 ℃ |
Storage Temperature |
-55 ℃~+85 ℃ |
-55 ℃~+85 ℃ |
-55 ℃~+85 ℃ |
-55 ℃~+85 ℃ |
-55 ℃~+85 ℃ |
Shock |
1500 G, 0.5 ms |
1500 G, 0.5 ms |
1500 G, 0.5 ms |
1500 G, 0.5 ms |
1500 G, 0.5 ms |
Vibration |
20~2000 Hz/20 G |
20~2000 Hz/20 G |
20~2000 Hz/20 G |
20~2000 Hz/20 G |
20~2000 Hz/20 G |
Lifetime(MTTF) |
>50 million shots |
>50 million shots |
>50 million shots |
>50 million shots |
>50 million shots |
Dimension |
30×18×7 mm |
30×18×7 mm |
30×18×7 mm |
41×18×12 mm |
50×18×12 mm |
Weight |
6g |
6g |
6g |
7g |
8g |
Electric Requirements |
2 V, 6 A, 2ms |
2 V,11A, 1.8ms |
2 V, 14A, 2.5ms |
2 V, 15A, 2.5ms |
2 V, 16.5A, 2.5ms |
Integrated Photodiode |
Optional |
Optional |
Optional |
Optional |
Optional |
FIGURE 3
For more details of eye-safe lasers, please visit our website:
https://www.erbiumtechnology.com/eye-safer-laser/
E-mail: devin@erbiumtechnology.com
WhatsApp: +86-18000520222
Fax: +86-2887897578
Add: No.23, Chaoyang road, Xihe street, Longquanyi distrcit, Chengdu,610107, China.
Post time: Jun-20-2022