Efficient high-power terahertz beating in a dual-wavelength synchronously mode-locked laser with dual gain media
- Resource Type
- Authors
- H. C. Liang; C. Y. Tang; Yung-Fu Chen; Y. S. Tzeng; Y. J. Huang; S. Y. Chiang
- Source
- Optics Letters. 39:1477
- Subject
- Active laser medium
Materials science
business.industry
Ti:sapphire laser
Laser pumping
Injection seeder
Atomic and Molecular Physics, and Optics
Optics
Mode-locking
Fiber laser
Diode-pumped solid-state laser
Optoelectronics
business
Tunable laser
- Language
- ISSN
- 1539-4794
0146-9592
We originally present a novel tactic to accomplish a compact efficient dual-wavelength synchronously mode-locked laser by physically combining the Nd:YVO4 crystal to the Nd:GdVO4 crystal as a composite gain medium. With the developed method, the total output power at 1.06 μm could be effectually produced to reach 1.3 W under the optimally balanced two-color intensities. The corresponding mode-locked pulse width and repetition rate are measured to be 47 ps and 2.86 GHz, respectively. Through the optical beating between two carrier frequencies of dual-color synchronous pulses, a train of 0.32 THz ultrashort pulses is further generated with the effective duration of down to 1.6 ps.