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Highly efficient continuous-wave diode-pumped Er, Yb:GdAl3(BO3)4 laser.
K N Gorbachenya1, V E Kisel, A S Yasukevich
1Center for Optical Materials and Technologies, Belarusian National Technical University, Minsk, Belarus. gorby@bntu.by
Optics Letters
|August 14, 2013
Summary
Highly efficient continuous-wave laser operation was achieved using an Erbium, Ytterbium co-doped Gadolinium Aluminum Borate crystal. This laser system produced significant output power at 1531 nm with a notable slope efficiency.
Area of Science:
- Materials Science
- Laser Physics
- Solid-State Chemistry
Background:
- Rare-earth doped crystals are crucial for developing advanced laser systems.
- Gadolinium Aluminum Borate (GdAl3(BO3)4) offers a promising host matrix for laser applications.
- Co-doping with Erbium (Er3+) and Ytterbium (Yb3+) ions enables efficient laser operation in the near-infrared region.
Purpose of the Study:
- To investigate the laser performance of a novel Er, Yb:GdAl3(BO3)4 crystal.
- To characterize the spectroscopic properties and energy transfer mechanisms within the crystal.
- To determine the potential for efficient continuous-wave (CW) diode-pumped laser operation.
Main Methods:
- Spectroscopic analysis including absorption and stimulated emission spectra measurement.
- Determination of emission lifetimes and energy transfer efficiencies between Yb3+ and Er3+ ions.
- Experimental setup for continuous-wave diode-pumped laser operation using the Er, Yb:GdAl3(BO3)4 crystal.
Main Results:
- The Er, Yb:GdAl3(BO3)4 crystal demonstrated efficient laser operation.
- Maximal output power of 780 mW was achieved at a wavelength of 1531 nm.
- A slope efficiency of 26% was recorded at an absorbed pump power of 4 W.
Conclusions:
- The Er, Yb:GdAl3(BO3)4 crystal is a highly efficient gain medium for diode-pumped lasers.
- The characterized spectroscopic properties support efficient energy transfer and laser emission.
- This crystal shows significant potential for applications requiring high-power, continuous-wave laser sources at 1531 nm.
