Operating characteristics of a high-power monolithically integrated flared amplifier master oscillator power amplifier

High-peak-power pulse generation from a monolithic master oscillator power amplifier at 15 μm

“…These effects have been theoretically analyzed [5,[7][8][9], and the results indicate that they produce modal instabilities, such as self-pulsations and coupled cavity mode competition. These effects are more relevant at low injection levels of the MO, producing ripples in the power-current (P-I) characteristics as a consequence of longitudinal mode hopping [5].…”

Red Tunable High-Power Narrow-Spectrum External-Cavity Diode Laser Based on Tapered Amplifier

“…The tapered laser devices can be used in applications where narrowspectrum is not needed such as photodynamic therapy, but for other applications such as a pump source for UV light generation, the spectral quality of these devices has to be improved. In order to improve the spectral quality of a tapered laser, different techniques are applied, such as a monolithically integrated master oscillator power amplifier by forming Bragg gratings in the semiconductor material (O'Brien et al, 1993(O'Brien et al, , 1997a, injection locking to an external single-mode laser Mehuys et al, 1993b;O'Brien et al, 1997b;Wilson et al, 1998;Ferrari et al, 1999;Spieβberger et al, 2011), and different external-cavity feedback techniques (Jones et al, 1995;Cornwell & Thomas, 1997;Morgott et al, 1998;Goyal et al, 1998;Pedersen & Hansen, 2005;Chi et al, 2005;Lucas-Leclin et al, 2008;Tien et al, 2008;Sakai et al, 2009). Up to 1 W output power at 668 nm from a Fabry-Perot tapered diode laser was obtained with a beam quality factor of 1.7, and the spectral width was smaller than 0.2 nm .…”

Tunable high-power narrow-spectrum external-cavity diode laser at 675 nm as a pump source for UV generation

“…In order to improve the spectral quality of a tapered laser, different techniques are applied, such as a monolithically integrated master oscillator power amplifier by forming Bragg gratings in the semiconductor material [3,4], injection locking to an external single-mode laser [5,6], and different external-cavity feedback techniques [7][8][9][10][11][12]. Up to 1 W output power at 668 nm from a Fabry-Perot tapered diode laser was obtained with a beam quality factor of 1.7, and the spectral width was smaller than 0:2 nm [13].…”