Description
📌 Product Overview
The COHERENT AVIA 355-3000 is a compact diode-pumped solid-state (DPSS), Q-switched ultraviolet laser system designed for precision material processing and other industrial laser applications.
The AVIA 355-3000 operates at a 355 nm ultraviolet wavelength and is commonly specified for more than 3 W average output at 20 kHz. Its repetition rate can be operated across a broad range, making it suitable for applications that require controlled pulse energy and high-speed processing.
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | COHERENT |
| Model | AVIA 355-3000 |
| Product Type | Q-Switched DPSS UV Laser System |
| Laser Wavelength | 355 nm |
| Average Output Power | >3.0 W @ 20 kHz |
| Repetition Rate | 0–100 kHz |
| Laser Type | Pulsed / Q-Switched |
| Laser Medium | Nd:YVO₄-based solid-state laser |
| Pulse Duration | Typically <40 ns, depending on operating conditions |
| Beam Mode | TEM00 |
| Beam Diameter | Approx. 2.7 mm |
| Beam Divergence | <0.3 mrad |
| Polarization Ratio | >100:1, horizontal |
| Pulse Stability | <5% RMS at 30 kHz |
| Cooling | Air-cooled laser head configuration |
| Laser Head Heat Dissipation | Up to 65 W |
| Ambient Temperature | Maximum 35°C for the 355-3000 configuration |
| System Components | Laser Head + Power Supply |
| Country of Origin | United States |
| Condition | Used — verify actual operating/test status |
Published technical references identify the AVIA 355-3000 as a 355 nm Q-switched UV laser with output above 3 W at 20 kHz and a 0–100 kHz repetition-rate range. Independent technical documentation also reports TEM00 beam quality, approximately 2.7 mm beam diameter and <0.3 mrad divergence.
🔧 Key Features
- 355 nm ultraviolet laser output
- Compact DPSS architecture
- Q-switched pulsed operation
- More than 3 W average output at 20 kHz
- Wide 0–100 kHz repetition-rate range
- TEM00 beam profile
- High pulse-to-pulse stability
- Integrated laser head and dedicated power supply
- Designed for precision industrial laser processing
- Suitable for integration with scanning and motion-control systems
The AVIA family supports control through a serial interface in compatible control environments, and software documentation specifically lists the 355-3000 as a supported AVIA laser type.
🏭 Typical Applications
The 355-3000 is used in applications where a focused ultraviolet pulsed beam is required, including:
- Semiconductor processing
- PCB and electronics processing
- Laser micromachining
- Micro-drilling
- Precision marking
- Thin-film processing
- Material removal
- Semiconductor package deprocessing
- Failure analysis
- Scientific and laboratory laser systems
- Galvanometer-based laser scanning
The 355-3000 has been documented in semiconductor failure-analysis and laser micromachining systems, where its UV wavelength and short pulses are useful for localized material processing.
🌡️ Installation & Cooling Notes
The laser head requires a suitable thermally conductive mounting surface. Documentation for the AVIA 355 series specifies a maximum heat dissipation of approximately 65 W for the 355-3000.
For air-cooled operation, the documented maximum ambient temperature for the 355-3000 is 35°C. The laser head baseplate temperature is monitored by the AVIA power supply, and the system can shut down if the baseplate temperature becomes excessive.
When installing a used unit, pay particular attention to:
- Laser head mounting surface
- Heat dissipation path
- Cooling airflow
- Power-supply connections
- Interlock connections
- External control interface
- Optical output window
- Laser head and power-supply serial numbers
The laser should only be operated with the appropriate protective enclosure, interlocks and laser safety equipment.
🧪 Inspection & Testing Recommendations
Because the referenced item is used, inspection is especially important for a laser system.
Recommended checks include:
- Verify the AVIA 355-3000 model label.
- Record the laser head and power supply serial numbers.
- Inspect the optical output window for contamination or damage.
- Check all electrical connectors and cables.
- Inspect the cooling path and mounting surface.
- Power up the system using the correct power configuration.
- Verify power-supply status and fault indicators.
- Check laser emission and interlock operation.
- Measure output power using an appropriate calibrated laser power meter.
- Check pulse behavior and repetition-rate operation.
- Record the final test results before shipment.
A laser head can power on without producing its specified optical output, so simply confirming that the power supply starts is not sufficient to establish full laser performance.
❓ Frequently Asked Questions
Q1: What wavelength does the AVIA 355-3000 produce?
The AVIA 355-3000 is a 355 nm ultraviolet laser.
Q2: What is the typical output power?
Published AVIA specifications list more than 3.0 W average output at 20 kHz. Actual output from a used unit depends on operating condition and service history.
Q3: Is the AVIA 355-3000 a continuous-wave laser?
No. It is a pulsed, Q-switched solid-state laser.
Q4: What is the maximum repetition rate?
Published specifications give a repetition-rate range of 0–100 kHz for the 355-3000.
Q5: Does the listing include the power supply?
Yes. The referenced eBay listing is titled and described as a laser head and power supply assembly. The exact accessories included should still be confirmed from the physical item before purchase.
Q6: Is the unit new or used?
The referenced eBay listing identifies the condition as Used.
Q7: Can the AVIA 355-3000 be replaced by a 355-4500 or 355-7000?
Not as a simple drop-in replacement. These models have different output-power requirements, operating conditions and system configurations. The complete laser system and application should be checked before substitution.
🔄 Related Coherent AVIA Models
The following models belong to the broader AVIA family and should be treated as related models rather than automatic replacements:
- COHERENT AVIA 355-1500
- COHERENT AVIA 355-1800
- COHERENT AVIA 355-3000
- COHERENT AVIA 355-4500
- COHERENT AVIA 355-7000
- COHERENT AVIA 355-X
- COHERENT AVIA 266-3000
- COHERENT AVIA Ultra 350
- COHERENT AVIA Ultra 500
- COHERENT AVIA Ultra 1000
The AVIA family includes multiple wavelength, power and configuration variants, so the model suffix should be matched carefully when sourcing a replacement.
📦 Identification & Ordering Notes
For procurement or replacement, verify the following information from the physical unit:
Brand: COHERENT
Model: AVIA 355-3000
System: Laser Head + Power Supply
Wavelength: 355 nm
Output: >3 W @ 20 kHz, specification-dependent
Condition: Used
Country of Origin: United States
The exact laser-head part number and power-supply part number should be photographed or recorded before ordering. Different AVIA 355-3000 assemblies and service parts can carry separate identification numbers; for example, public listings reference laser-head assemblies such as 0175-739-50 and other AVIA head PCB assemblies.
For a used laser, actual optical output, operating hours, pulse performance and fault history are more important than appearance alone. These points should be confirmed before treating the unit as production-ready.
