| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Transverse Inhomogeneous Carrier-Envelope Phase Distribution of Idler Generated through Difference-Frequency-Generation |
| QIU Ping, WANG Ke, ZHU He-Yuan, QIAN Lie-Jia |
| Department of Optical Science and Engineering, Laboratory for Advanced Materials, Fudan University, Shanghai 200433 |
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| Cite this article: |
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QIU Ping, WANG Ke, ZHU He-Yuan et al 2010 Chin. Phys. Lett. 27 034204 |
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Abstract The transverse inhomogeneous carrier-envelope phase (CEP) distribution of idler generated through difference-frequency-generation (DFG) in quadratic nonlinear crystals is theoretically studied. In practical CEP stabilized DFG setups, the pump and the signal are usually Gaussian beams with non-uniform intensity distribution. Since the idler CEP is dependent on gain, this non-uniform intensity distribution leads to inhomogeneous gain across the aperture of the idler beam, resulting in a varying transverse idler CEP. Simulation results show that in practical settings, in the high-gain regime, transverse inhomogeneous CEP can be much smaller compared with π/2. However, when gain on the propagation axis reaches saturation, CEP difference can well exceed π/2.
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| Keywords:
42.65.Lm
42.65.Re
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Received: 18 November 2009
Published: 09 March 2010
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| PACS: |
42.65.Lm
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(Parametric down conversion and production of entangled photons)
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42.65.Re
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(Ultrafast processes; optical pulse generation and pulse compression)
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