Hsu, Chih-WeiChih-WeiHsuChen, Cheng-YenCheng-YenChenCHIH-CHUNG YANG2018-09-102018-09-101999http://www.scopus.com/inward/record.url?eid=2-s2.0-0033318581&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/348187https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033318581&doi=10.1109%2fCLEOPR.1999.811364&partnerID=40&md5=cd85b0ff0efdb199d96e632ca6ea2b7bWe propose the idea of using a grating structure for solving the problem of the incomplete quasi-phase matching (QPM) period and demonstrate the simulation results of phase compensation in achieving efficient round-trip optical parametric oscillation in periodically poled LiNbO3 (PPLN). The layout of a monolithic optical parametric oscillator (OPO) with two surface gratings at both ends is shown. The two gratings are chirped to guarantee that their phase variations over the Bragg reflection windows are larger than 2π. One of them has a length of 1 mm and the other has a length of 0.8 mm. The pump input is applied from the long grating side and the signal output is obtained from the short grating side. The whole PPLN length is 5 mm. For our numerical study, we consider the pump wavelength at 1064 nm and signal wavelength at 1550 nm. The idler wavelength is hence at 3.393 μm. The corresponding QPM period of PPLN is 29.6 μm. The central grating period is 361.83 nm, which corresponds to the Bragg wavelength 1550 nm. To obtain numerical results, we solved the coupled equations for the forward and backward pump complex amplitudes, the forward and backward signal complex amplitudes, and the forward and backward idler complex amplitudes. © 1999 IEEE.Adaptive optics; Diffraction gratings; Laser optics; Lithium compounds; Niobium compounds; Optical parametric oscillators; Optical signal processing; Phase matching; Computer simulation; Difference equations; Diffraction gratings; Frequency doublers; Lithium niobate; Optical frequency conversion; Problem solving; Complex amplitude; Forward-and-backward; Grating structures; Numerical results; Optical parametric oscillations; Periodically poled LiNbO3; Phase compensation; Quasi-phase-matching; Parametric oscillators; Optical parametric oscillators; Bragg wavelength; Domain inversion technique; Monolithic wavelength converter; Phase compensationconference paper2-s2.0-0033318581