Pulsed 1535 nm laser sources: Er:Yb glass microchip lasers and diode-pumped Q-switched transmitters, from 10 µJ to 10 mJ. We don't sell complete rangefinders or designators — we supply the transmitter that goes inside them. The full range is on the products page.

Start from the energy you need on target, not from the maximum range in a brochure. Range depends on target reflectivity, size and visibility, so two customers asking for "3 km" can need different models. This guide walks through the link budget, and we'll check your numbers if you send them.

The MINI-100 is a microchip laser: 100 µJ, 3.5 ns, 2.5 g, 14.5 mm long. The ER series uses a bench assembly, which buys energy, beam quality and serviceability at the cost of size. Same wavelength, same TEM00 output. This comparison puts all sixteen models side by side.

Yes. Tell us the application and the model, and we'll quote an evaluation unit with its datasheet and test record. Most customers run it against their own optics before placing a production order.

We build at 1535 nm. Custom work is usually about drive conditions, housing, connector or interface rather than wavelength. Send the requirement and we'll say whether it's a variant or a new design.

A datasheet with guaranteed values, an outline drawing, a STEP file on request, and the test record for that serial number. If you need a specific test — pulse width on a stated detector, divergence by a stated method — say so when ordering, because it changes the acceptance procedure.

Pyroelectric sensor for energy, a fast InGaAs photodiode and a scope with matching bandwidth for pulse width, and the two-distance method for divergence. This note covers the instrument traps that cause most false rejections.

The wavelength sits in the eye-safe band, which allows more energy within a given laser class. The class belongs to the finished product, though — optics, enclosure and duty cycle all change the assessment. We can supply the source data your safety file needs.

We ship internationally and we handle export documentation per order. Whether a specific end use is permitted depends on the destination and the current rules, so tell us the end use at enquiry stage and we'll confirm before quoting.

Quoted per order, because terms depend on destination and order size. We accept the usual B2B methods; the quote states what applies to your order so there's no surprise at invoice.

Send the serial number and how it failed. Units within warranty are repaired or replaced; out-of-warranty units are assessed and quoted. Because every unit is tested before it ships, we usually know what a specific failure means from the record.

WhatsApp is fastest: +86 133 0819 5797. Or email Taylor@erdimail.com. Include the application, energy needed at the target, repetition rate, supply available and the aperture you can carry — with those five we can answer in one round.