Quasi-continuous wave laser system MCQL-450/4500/x

fiberinfraredfor medical applications

Overview
Quasi-continuous wave (QCW) fiber lasers deliver relatively long, high-peak-power pulses to achieve processing comparable to continuous wave (CW) lasers while operating at lower average power. QCW pulses can provide peak power up to 10× the average and pulse energy up to hundreds of joules. Typical pulse durations range from 0.05 ms to 50 ms. Configurations include single-mode, multi-mode and multi-channel units across several wavelength families (standard 1070 nm).

Maximize Laser Power
QCW fiber lasers generate long pulses with high peak power to enable efficient energy coupling to metals and non-metals at reduced average power, permitting high pulse energy or low heat input strategies for sensitive materials and high-throughput processes.

Key Capabilities & Features

• Peak power up to 10× average power
• Pulse durations typically 0.05–50 ms (family-dependent)
• Pulse energy up to hundreds of joules (example up to 240 J)
• Available in single-mode, multi-mode and multi-channel configurations
• Wavelength options: 1070 nm standard; diode QCW (~895 nm) and thulium QCW (1880–2100 nm) variants
• Analog pulse modulation for shaping temporal pulse profiles and pulse trains

Flexible Application Optimization
Individual QCW pulses can be modulated to achieve application-specific temporal shapes or pulse trains. Typical strategies include multi-pulse bursts for drilling, ramp-up pulses for pre-cleaning, enhanced spikes for high-reflectivity materials, and ramp-down pulses to reduce cracking in sensitive substrates.

Applications

• Drilling — combination of high peak power and long pulse duration yields high-quality holes at high throughput.
• Welding — peak power overcomes metal reflectivity (e.g., copper, aluminum) with minimal heat input; suitable for battery welding and precision joints.
• Cutting — single-mode QCW lasers enable efficient coupling to non-metals (ceramics, sapphire) for high-speed, high-quality IR cutting.
• Medical & scientific uses — diode and thulium QCW modules provide pulse energy and wavelengths for selected medical and laboratory integrations.

Product Families / Variants (overview)
Representative families include YLS-QCW (multi-mode cabinets), MCQL (multi-channel QCW), YLR-QCW (racks), YLM-QCW (modules), YLR/YLM-QCW-SM (single-mode), plus DLM-QCW (diode QCW modules) and TLM-QCW (thulium QCW modules).

Representative Series Comparison (high-level)
1070 nm | Output channels | Multi-mode avg power | 10× peak | Pulse energy | Pulse duration | Fiber diameter | Rep rate | Cooling
YLS-QCW: 1 | up to 2 kW | up to 20 kW | up to 240 J | 0.2–10 ms | 50–300 μm | up to 2 kHz | air or water
MCQL: 2,3,4,6 | up to 500 W/channel | up to 6 kW/channel | up to 60 J/channel | 0.05–50 ms | 200–600 μm | up to 10 kHz | water
YLR-QCW / YLM-QCW / SM variants: ranges up to 600 W (modules), single-mode 14 μm, rep rates up to 50 kHz, cooling air or water depending on series.

Diode & Thulium QCW Options
DLM-QCW (diode QCW): central wavelength ~895 nm, outputs to several hundred watts, fiber cores up to ~600 μm for OEM handheld integration; TLM-QCW (thulium QCW): 1880–2100 nm range, module options for mid-IR applications with single-mode and multi-mode fibers and pulse energies suited for specific industrial or medical tasks.

Notes
Specifications shown are representative of standard products; customized configurations and regional availability are offered on request.

Technical specifications

• Typical nominal wavelength: 1070 nm (diode ~895 nm; thulium 1880–2100 nm)
• Pulse duration: commonly 0.05–50 ms (some cabinets 0.2–10 ms)
• Pulse energy: up to ~240 J (family-dependent)
• Peak power capability: up to ~20 kW (10× average, family-dependent)
• Pulse repetition rate: from single-digit Hz up to 50 kHz (model-dependent)
• Fiber diameters: single-mode ~14 µm; multimode 50,100,200,300,400,600 µm
• Cooling: air-cooled or water-cooled options depending on series