| 摘要 |
A thermal birefringence compensator for a double pass laser system, which includes a polarization (300) or conventionally (500) outcoupled laser resonator, a gain medium (200) and a compensator (100) optically coupled to the gain medium (200). In one implementation, the compensator (100), which acts as an end reflector, includes a Benson prism (102), a first quarter waveplate (104) with its principle axes aligned to the fold axis of the Bens on prism (102), and a second quarter waveplate (106) with its principle axes at 45~ to the fold axis of the Benson prism (102). Alternatively, the compensation's prism can be a Porro prism (108).
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