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Subpicosecond pulse generation from a Nd:CLNGG disordered crystal laser
1School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore. gqxie@ntu.edu.sg
Optics Letters
|February 27, 2009
Summary
We developed a novel diode-pumped laser using a Neodymium-doped Calcium Lithium Niobium Gallium Garnet (Nd:CLNGG) disordered crystal. This laser achieves subpicosecond pulses, offering a new option for ultrafast laser applications.
Area of Science:
- Lasers and Photonics
- Materials Science
Background:
- Disordered crystals offer unique optical properties for laser development.
- Nd:CLNGG is a promising material for laser applications due to its spectral characteristics.
Purpose of the Study:
- To demonstrate the first diode-pumped, passively mode-locked subpicosecond laser utilizing a Nd:CLNGG disordered crystal.
- To characterize the performance of this novel laser system in terms of pulse duration, repetition rate, and output power.
Main Methods:
- Utilizing a diode-pumped, passively mode-locked configuration.
- Employing a Nd:CLNGG disordered crystal as the gain medium.
- Characterizing the output pulses using an autocorrelator and power meter.
Main Results:
- Achieved subpicosecond (900 fs) mode-locked pulses at a 1061 nm wavelength.
- Obtained a repetition rate of approximately 88 MHz.
- Reached a maximum average output power of 486 mW with a slope efficiency of 26%.
Conclusions:
- The Nd:CLNGG disordered crystal is suitable for generating subpicosecond pulses.
- Diode-pumping offers an efficient method for exciting the Nd:CLNGG laser.
- Nd:CLNGG presents a viable alternative for ultrafast laser sources.
