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FM mode-locked, laser-diode-pumped La(1-x)Nd(x)MgAl(11)O(19) laser
Applied Optics
|September 22, 2010
Summary
Researchers operated a new laser using neodymium-doped lanthanum magnesium hexaaluminate crystals. This laser produced ultrashort pulses at a 230 MHz repetition rate, demonstrating potential for advanced optical applications.
Area of Science:
- Laser physics
- Solid-state lasers
- Materials science
Background:
- Neodymium-doped lasers are crucial for various optical applications.
- Mode-locked lasers generate ultrashort pulses essential for high-speed communications and research.
- Developing efficient and stable mode-locked lasers is an ongoing area of research.
Purpose of the Study:
- To report the operation of a laser diode-pumped La(1-x)Nd(x)MgAl(11)O(19) laser.
- To achieve mode-locked operation using an electro-optic phase modulator.
- To characterize the output pulses and explore frequency modulation (FM) capabilities.
Main Methods:
- Utilized a laser diode-pumped La(1-x)Nd(x)MgAl(11)O(19) crystal.
- Employed an electro-optic phase modulator for mode-locking.
- Pumped the laser with a 500-mW broad-stripe laser diode.
- Measured pulse duration, repetition rate, and output power.
Main Results:
- Achieved a repetition rate of 230 MHz.
- Obtained an average output power of 50 mW.
- Generated transform-limited pulses with a duration of 14 picoseconds.
- Demonstrated FM operation with bandwidths up to 440 GHz.
Conclusions:
- The La(1-x)Nd(x)MgAl(11)O(19) laser is effectively mode-locked using an electro-optic modulator.
- The laser system produces high-quality ultrashort pulses suitable for demanding applications.
- The demonstrated FM operation broadens the potential applications in optical communications and spectroscopy.
