OEM Solutions

1535 nm Eye-Safe Laser Transmitters, Built Into Your Product

ERDI is not a general-purpose laser supplier. We build the laser transmitter that goes inside your product: 1535 nm Er:Yb glass microchip sources supplied as OEM sub-assemblies, engineered together with four types of integration teams — LiDAR companies, laser rangefinder OEMs, EO / optical system integrators and research institutions. Pulse energy runs from 10 µJ to 10 mJ, with 0.3–0.8 mm raw beam diameter, TEM00 output, −40 °C to +65 °C operation, and drive voltages from 2 V.

This page is written for the engineer who has to make the transmitter work inside a system — link budget, envelope, drive interface and test data. If you are looking for a catalogue purchase, start from our product families instead.

Who we work with

Customer type	What they specify from us	Typical programme
LiDAR companies	Laser transmitter, pulsed laser source, eye-safe laser	UAV LiDAR, mobile mapping, 3D scanning
Laser rangefinder OEMs	1535 nm transmitter, compact laser source	Handheld, vehicle and gimbal rangefinders
EO & optical system integrators	Custom laser source, OEM integration	Electro-optical sights and sensor payloads
Research institutions	Compact pulsed laser, experimental laser source	Lab benches, detector characterisation, prototypes

1. LiDAR companies

What you need from a supplier: laser transmitter, pulsed laser source, eye-safe laser.

Airborne LiDAR, mobile mapping and 3D scanning payloads are limited by mass, power and eye safety. ERDI sources are microchip-format transmitters: 2.5 g at 100 µJ (MINI-100), 7–12 g at 100–500 µJ (ER100–ER500) and up to 10 mJ for long-range and remote-sensing channels (ER10000). All operate at 1535 nm, where the eye-safety limit is far higher than at 905 nm. TEM00 beam quality and 7–10 mrad divergence let you define point density with your own optics instead of compensating for the source.

• UAV LiDAR — MINI-100 (100 µJ, 3.5 ns, 2.5 g) and ER400 for SWaP-critical payloads
• Mobile mapping — ER800 / ER900 (800–900 µJ, 7 ns, 18 g) for road-corridor range at 1–10 Hz
• 3D scanning and remote sensing — ER2000 (2 mJ, 12 ns) up to ER10000 (10 mJ) for extended link budget

Drive interface: 2 V for the compact range, ≤ 14 V for the multi-mJ models, with drive pulse width from ≤ 1.1 ms to ≤ 2.4 ms — a low-voltage trigger your timing electronics already produces.

2. Laser rangefinder OEMs

What you need from a supplier: 1535 nm transmitter, compact laser source.

In handheld, vehicle and gimbal-mounted rangefinders the transmitter has to fit an envelope you have already tooled. Our 1535 nm range starts at 14.5 × 6.3 × 4.37 mm (MINI-100) and scales to 60 × 25 × 13.5 mm at 2–4 mJ (ER2000 / ER4000), with stable pulse energy and 5–10 % pulse stability across −40 °C to +65 °C. Every model shares the same 1535 nm wavelength, so one receiver design can cover several product tiers.

Product tier	Recommended source	Pulse energy / width	Package / mass
Handheld, short range	MINI-100 / ER100	100 µJ / 3.5–6 ns	14.5–21 mm / 2.5–7 g
Handheld, medium range	ER400 / ER500	400–500 µJ / 6 ns	35 × 8 × 6.8 mm / 12 g
Long-range observation	ER2000 / ER4000	2–4 mJ / 12 ns	60 × 25 × 13.5 mm / 105 g
Extended range, low rep-rate	ER8000 / ER10000	8–10 mJ / 12–13 ns	110 × 40 × 24.5 mm / 220 g

We supply the transmitter, its drive conditions and the mechanical envelope. The receiver, the timing electronics and the product definition stay with you.

3. EO & optical system integrators

What you need from a supplier: custom laser source, OEM integration.

When the transmitter has to match an optical bench, a boresight or a housing that already exists, we adapt the source rather than ask you to redesign the system. Custom and OEM integration work covers:

• Beam tailoring — divergence, raw beam diameter (0.3–0.8 mm) and exit-window arrangement
• Mechanical adaptation — mounting datum, footprint, connector and harness definition
• Drive and timing interface — trigger level, drive pulse width, repetition rate and pulse-detection output
• Environmental build — compact models are qualified to MIL-STD-810G shock (1500 G, 0.5 ms) and vibration (20–2000 Hz / 20 G) methods
• Documentation set — datasheet, 2D drawing and STEP model for your mechanical and optical teams

Custom configurations are quoted against your requirement list. Any change that touches the optical or drive design is reviewed by our engineering team before we commit to a specification, so the number you receive is the number we can build.

4. Research institutions

What you need from a supplier: compact pulsed laser, experimental laser source.

Laboratories use our sources as an off-the-shelf experimental transmitter: 1535 nm, TEM00, 3.5–13 ns pulse width, single-shot to 10 Hz, in a package small enough to mount on a breadboard or inside a prototype.

• Single-unit quantities are available for evaluation and proof-of-concept work
• The same source family spans 10 µJ to 10 mJ, so an experiment can be scaled without changing wavelength or receiver design
• Drive conditions (voltage, current, drive pulse width) are published per model, so the source can run from your own driver electronics
• Typical uses: ranging experiments, detector and APD characterisation, LiDAR proof-of-concept builds and teaching benches

Technical reference — 1535 nm laser transmitter family

Model	Pulse energy	Pulse width	Rep. rate	Package L × W × H (mm)	Mass	Drive
MINI-100	≥ 100 µJ	3.5 ns	1–10 Hz	14.5 × 6.3 × 4.37	2.5 g	2 V / 12 A
ER100	≥ 100 µJ	6 ns	1–10 Hz	21 × 8 × 6.8	7 g	2 V / 8 A
ER200	200 µJ	5 ns	10 Hz	21 × 8 × 6.8	7 g	2 V / 10 A
ER300	≥ 300 µJ	5 ns	1–10 Hz	25 × 8 × 6.8	8.5 g	2 V / 12 A
ER400	400 µJ	6 ns	10 Hz	35 × 8 × 6.8	12 g	2 V / 15 A
ER500	≥ 500 µJ	6 ns	1–10 Hz	35 × 8 × 6.8	12 g	2 V / 20 A
ER800	≥ 800 µJ	7 ns	1–10 Hz	40 × 8 × 7.5	18 g	2 V / 30 A
ER900	≥ 900 µJ	7 ns	1–5 Hz	40 × 8 × 7.5	18 g	2 V / 30 A
ER2000	≥ 2 mJ	12 ns	1–10 Hz	60 × 25 × 13.5	105 g	≤ 5 V / 80 A
ER4000	≥ 4 mJ	12 ns	1–5 Hz	60 × 25 × 13.5	105 g	≤ 5 V / 100 A
ER8000	≥ 8 mJ	13 ns	1–5 Hz	110 × 40 × 24.5	220 g	≤ 14 V / 100 A
ER10000	≥ 10 mJ	12 ns	1–5 Hz	110 × 40 × 24.5	220 g	≤ 14 V / 100 A

Common specification across the family: 1535 nm ± 5 nm wavelength, TEM00 transverse mode, −40 °C to +65 °C operating temperature, −55 °C storage. Full parameter tables, 2D drawings and STEP models are available for each model on request.

What we support at OEM level

1. Model selection — pulse energy, pulse width and repetition rate matched to your link budget, not to the largest unit in the catalogue
2. Interface definition — drive voltage and current, trigger timing, drive pulse width and mechanical mounting datum
3. Optical adaptation — beam diameter, divergence and window or optics arrangement
4. Environmental review — shock and vibration methods already applied on the compact models
5. Sample and pilot builds — prototype units for your integration and test phase
6. Documentation — datasheets, drawings, STEP models and drive-condition tables
7. Production supply — repeatable builds with per-unit test data, from single units to volume programmes
8. Engineering contact — a technical counterpart for the questions your design review will raise

Send us your requirement

We quote from your parameters, not from a catalogue position. Send the following and our engineering team will come back with a recommended source, its drive conditions and the documentation you need:

• Application (LiDAR / rangefinder / EO integration / research)
• Required pulse energy and pulse width
• Repetition rate
• Beam diameter and divergence at exit
• Drive voltage and trigger interface available in your design
• Package envelope and mass limit
• Prototype quantity and target annual volume
• Target schedule

Contact our OEM engineering team →