QCW Diode Pump Module

The QCW Diode Pump Module is a new type of solid-state laser that uses solid laser material as the gain medium. This laser employs a quasi-continuous-wave diode laser operating at a fixed wavelength to pump the laser crystal, making it recognized as a second-generation laser. It represents a novel solid-state laser system characterized by high efficiency, long service life, excellent beam quality, superior stability, a compact structure, and miniaturization. This technology offers distinctive application prospects in various high-tech fields, including space communication, micro-nano processing, atmospheric research, environmental science, medical devices, and optical image processing.

Introducing our Diode-Pumped Solid-State Laser (DPSS Laser) Module, a groundbreaking innovation in the field of laser technology. This module, a cornerstone in our product lineup, is not merely a solid-state laser but a sophisticated pump light module, designed with precision and efficiency in mind.

DPSSL Core Features: 

Semiconductor Laser Pumping:Our DPL employs a semiconductor laser as its pump source. This design choice offers significant advantages over traditional xenon lamp-pumped lasers, such as a more compact structure, enhanced practicality, and an extended operational lifespan.

Versatile Operation Modes:The DPL module operates in two primary modes - Continuous Wave (CW) and Quasi-Continuous Wave (QCW). The QCW mode, in particular, employs an array of laser diodes for pumping, achieving higher peak power, making it suitable for applications like Optical Parametric Oscillators (OPO) and Master Oscillator Power Amplifiers (MOPA).

Laser Pumping Techniques: 

Side Pumping: Also known as transverse pumping, this technique involves directing pump light from the side of the gain medium. The laser mode oscillates along the length of the gain medium, with the pump light direction perpendicular to the laser output. This configuration, primarily composed of the pump source, laser working medium, and resonant cavity, is crucial for high-power DPLs.

End Pumping:Common in mid-to-low power LD-pumped solid-state lasers, end pumping aligns the pump light direction with the laser output, offering better spot effects. This setup includes the pump source, optical coupling system, laser working medium, and resonant cavity.

DPSSL Gain Medium: 

Nd:YAG Crystal:  Our DPL modules utilize Nd: YAG crystals, known for absorbing the 808nm wavelength and subsequently undergoing a four-level energy transition to emit a 1064nm laser line. The doping concentration of these crystals typically ranges from 0.6atm% to 1.1atm%, with higher concentrations offering increased laser power output but potentially reducing beam quality. Our standard crystal dimensions range from 30mm to 200mm in length and Ø2mm to Ø15mm in diameter.

Enhanced Design for Superior Performance: 

Uniform Pumping Structure: To reduce thermal effects in the crystal and improve beam quality and power stability, our high-power DPLs use a symmetrically arranged diode pump laser array for uniform excitation of the laser working medium.

Optimized Crystal Length and Pump Directions:For further enhancement of output power and beam quality, we increase the laser crystal length and expand the pumping directions. For instance, extending the crystal length from 65mm to 130mm and diversifying the pumping directions to three, five, seven, or even an annular arrangement.

OEM Service: 

Lumispot also offers customization services such as power, form factor, ND: YAG doping concentration, etc. to meet the user's needs in terms of output power, operating mode, efficiency, appearance, etc. For more information, please refer to the product data sheet below and contact us with any additional questions.