In the field of ultrafast laser systems, titanium-sapphire femtosecond lasers (Ti:sapphire) have long been considered the standard solution for achieving millijoule-level energy and sub-40 femtosecond pulse durations. However, with the continuous advancement of laser technology, an increasing number of new solutions have emerged, offering performance comparable to traditional titanium-sapphire systems, and even outperforming them in certain aspects. Among these, the Yb-doped femtosecond laser combined with a multi-pass pulse compressor (MPC) is becoming a more efficient, cost-effective, and compact alternative.

Based on this advantage, a research institute in Nanjing ultimately chose Y-laser femtosecond lasers to provide a high-power, high-energy, ultrashort pulse laser system for high-order harmonic generation and aerodynamics-related research. The system has been delivered and is performing well in operation.

Why Yb + MPC Has Become a Breakthrough Choice？
The Yb+MPC system's significant advantages in compact structure, high average power, and strong system integration make it an ideal alternative to the titanium-sapphire femtosecond laser system.

1.Compact Structure and High Average Power
Compared to the titanium-sapphire system, the Yb femtosecond laser has a more compact structure. The laser is not only smaller in size but also offers higher average power output within the same power range, giving it a significant advantage in space utilization and system integration. This is crucial for our laboratory, especially when it comes to achieving efficient laser output and system integration in a limited space, which became the key reason for choosing the Yb laser.

2.High System Integration
Compared to traditional titanium-sapphire femtosecond laser systems, the Yb femtosecond laser system offers higher system integration. Its design reduces the reliance on large optical pumping equipment and water-cooling systems typically needed in traditional titanium-sapphire lasers, making the entire system not only more efficient but also easier to maintain. When used in combination with a high-performance multi-pass MPC pulse compressor, the Yb femtosecond laser can achieve excellent pulse compression in an extremely compact form, meeting the needs of various cutting-edge scientific and industrial applications.

3.Performance Improvement with MPC Pulse Compressor
The combination of the multi-pass pulse compressor (MPC) and the Yb laser system enhances the pulse compression effect of the entire system. In practical applications, after combining the 2mJ high-energy femtosecond solid-state laser with the MPC pulse compressor, we achieved a pulse width of less than 40 fs, and the output beam quality is excellent, ensuring the system's stability and reliability in high-precision applications.

4.Stability and Consistency
When selecting a femtosecond laser system, stability and consistency are among the core factors we consider. By using the 2mJ high-energy femtosecond solid-state laser we provide, we have had an excellent experience with the system's long-term stability and consistency. After extended operation, the system maintains stable output, and its performance indicators (such as pulse energy, pulse width, and beam quality) remain within the expected range. The integration of the MPC pulse compressor further ensures the system's stability and efficient output under different operating conditions.

Y-laser Successfully Delivers Yb+MPC System
The system consists of the HELIOS-20W-HE Yb laser and the HYPERION-G-HE MPC pulse compressor, combining a high-power, highly stable femtosecond laser with an efficient pulse compressor. It is capable of providing extremely short pulse durations to meet the high-precision requirements of scientific research and industrial applications.


The HELIOS series femtosecond lasers have a maximum output power of 20W and a maximum single pulse energy of 2mJ (customizable up to 3mJ), with the shortest pulse duration reaching 190 fs. The pulse width can be adjusted from 190 fs to 10 ps. Its high stability and precise output characteristics make the laser highly effective in the ultrafast laser field. With a 1030 nm central wavelength, available in horizontal or vertical polarization, a beam quality of M² < 1.2, and a beam diameter of 5±1 mm, the system ensures precise focusing and stable output. The laser supports pulse selection, with a repetition rate adjustable within the range of single-shot to kHz-200 kHz (1 MHz customizable), and pulse energy stability of <1% RMS at 8 hours. The long-term power stability reaches <0.5% RMS at 24 hours, making it ideal for high-precision experiments and industrial applications.



The design of the HYPERION-G-HE pulse compressor is optimized to perfectly match the HELIOS-20W-HE laser, capable of compressing input pulse durations from 150 fs to 1 ps down to <40 fs. It offers high compression efficiency of >90%, with a typical compression factor between 5-10 times, delivering extremely short pulses to meet the demands for ultrashort pulses and high energy transmission. The compressor is compatible with high-power laser systems such as HCF systems, capable of outputting few-cycle pulses, supporting a wide range of applications like ultrafast imaging and spectroscopy. The exceptional performance in compression efficiency and output pulse duration ensures that users can achieve pulse compression with high precision and stability.

System Advantages：
· High Power and Short Pulse Output: The combination of the HELIOS-20W-HE laser and the HYPERION-G-HE MPC pulse compressor provides up to 2mJ of single-pulse energy and <50 fs pulse width, meeting the demands for ultrashort pulses and high energy.
· Efficient Pulse Compression: The MPC pulse compressor effectively compresses pulse duration with a compression efficiency greater than 90%, ensuring excellent performance and high energy transfer.
· High System Integration: The system seamlessly integrates optical parametric amplifiers and harmonic output options, meeting diverse research and industrial needs and offering flexible output options.
· Excellent Stability and Consistency: The system offers exceptional stability, with pulse energy stability of <1% RMS @8h and long-term power stability of <0.5% RMS @24h, ensuring long-term efficient operation.

Customer Feedback：
We originally planned to purchase a titanium-sapphire femtosecond laser system, but after in-depth research, we found that the Yb femtosecond laser offers significant advantages in terms of compact structure, high average power, and strong system integration. Particularly when paired with a high-performance multi-pass MPC pulse compressor, it can also achieve ultrashort pulse output. Therefore, we ultimately chose the Yb + MPC solution provided by Y-laser.

After some time of actual use, we are very satisfied with the performance of this system. The 2 mJ femtosecond laser provided by Y-laser excels in output stability, system consistency, and all key performance indicators, fully meeting our experimental needs. The accompanying MPC compression module helped us achieve a pulse width of less than 50 fs, with excellent beam quality, and the overall system operates reliably with easy maintenance. In addition, the Y-laser team provided very professional support throughout the entire delivery and usage process, including on-site commissioning, optical layout guidance, and operational training. Their service response was fast, and their attitude was diligent, reflecting a strong sense of customer responsibility.

We are very satisfied with this procurement experience and look forward to future cooperation. We hope Y-laser will continue to develop in the field of high-energy femtosecond products and launch higher-spec solutions, such as the 3 mJ femtosecond laser + MPC, to meet the needs of more cutting-edge scientific research.