Related Experiment Videos
High-performance, compact, prismless, low-threshold 30-MHz Ti:Al2O3 laser.
Alphan Sennaroglu1, Andrew M Kowalevicz, Franz X Kärtner
1Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Optics Letters
|September 19, 2003
Summary
We developed a compact femtosecond titanium sapphire (Ti:Al2O3) laser using a novel multipass cavity design. This all-solid-state laser achieves efficient low-threshold operation and high pulse energy in a small footprint.
Area of Science:
- Laser physics
- Ultrafast optics
- Materials science
Background:
- Femtosecond lasers are crucial for various scientific applications.
- Existing Ti:Al2O3 lasers can be bulky and require complex dispersion management.
- Developing compact, efficient, and high-performance ultrafast lasers remains a key challenge.
Purpose of the Study:
- To design and operate a compact femtosecond Ti:Al2O3 laser.
- To implement a novel multipass cavity (MPC) design for enhanced performance.
- To achieve efficient low-threshold operation and high pulse energies in a reduced footprint.
Main Methods:
- Utilized a novel multipass cavity (MPC) design for resonator extension.
- Employed prismless dispersion compensation with double-chirped mirrors.
- Implemented a tight-focusing geometry for efficient pumping and low-threshold operation.
Main Results:
- Achieved 23-fs pulse duration at a 31.25 MHz repetition rate.
- Generated 88 mW of average output power, corresponding to 2.8 nJ pulse energy.
- Demonstrated a compact laser system (30 cm x 45 cm) with an effective cavity length of approximately 5 m.
Conclusions:
- The novel MPC design enables a compact and scalable femtosecond Ti:Al2O3 laser.
- The laser exhibits efficient low-threshold operation and high pulse energy characteristics.
- This compact ultrafast laser system is suitable for various demanding applications requiring high performance in a small package.