$Diffraction limited output from a CW Nd:YAG master oscillator/power amplifier with fibre phase conjugate SBS mirror$

Diffraction limited output from a CW Nd:YAG master oscillator/power amplifier with fibre phase conjugate SBS mirror

A CW Nd:YAG master oscillator power amplifier with fibre based SBS phase conjugate mirror is reported. A four-pass amplifier configuration is employed to compensate pump induced thermal lens and birefringence in the amplifier rod in conjunction with a fibre phase conjugator to achieve diffraction li...

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Veröffentlicht in:	Optics communications 1999-08, Vol.166 (1), p.89-93
Hauptverfasser:	Kovalev, Valeri I, Harrison, Robert G
Format:	Artikel
Sprache:	eng
Schlagworte:	Beam cleanup Continuous operation Doped-insulator lasers and other solid state lasers Exact sciences and technology Fundamental areas of phenomenology (including applications) Laser optical systems: design and operation Lasers Multi-pass amplifier Nonlinear optics Optics Phase conjugation Physics SBS Stimulated brillouin and rayleigh scattering
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Beschreibung
Zusammenfassung:	A CW Nd:YAG master oscillator power amplifier with fibre based SBS phase conjugate mirror is reported. A four-pass amplifier configuration is employed to compensate pump induced thermal lens and birefringence in the amplifier rod in conjunction with a fibre phase conjugator to achieve diffraction limited output beam quality. Maximal attainable gain of ∼1.9 for the system is obtained. Application of the technique to diode pumped systems for high gain and high power delivery is proposed.
ISSN:	0030-4018 1873-0310
DOI:	10.1016/S0030-4018(99)00267-9