Acta Optica Sinica, Volume. 9, Issue 3, 252(1989)
Theory of photothermal optical beam deflection at square-wave modulation
In this paper, the theory of photothermal optical beam deflection (PTOBD) is described in the case of intensity of heated beam was modulated by squar-wave. The amplitude dependences of PTOBD on power and radius of heated beam relative position of heated and probe beam, modulation-frequency are discussed theoretically. Comparison has been made with experimental results, and shown that they are in agreement quanlitatively.
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LI BINCHEN, ZBNG ZHAOXIN, HE SHUNHUA. Theory of photothermal optical beam deflection at square-wave modulation[J]. Acta Optica Sinica, 1989, 9(3): 252