Quasi-two-level Yb:KYW laser with a volume Bragg grating

• Using a volume Bragg grating as input coupler, we demonstrate an Yb:KYW laser with a very small quantum defect (1.6%) and an output power of 3.6 W. The laser was longitudinally diode-pumped at 982 nm and the laser wavelength was determined by the grating to 998 nm, with a laser bandwidth of 10 GHz (33 pm). Due to the low quantum defect, the laser should be readily scalable to 20 W or more without critical thermal effects.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

Bandwidth; Bragg gratings; Laser radiation; Quantum theory; Thermal effects; Wavelength; Critical thermal effects; Input couplers; Quantum defect; Volume Bragg grating; Waveguide couplers

Physics

Fysik

Publication and Content Type

ref (subject category)

art (subject category)