Birefringence-controlled anti-Stokes line emission from a microstructure fiber

Abstract

Microstructure fibers with a specially designed form birefringence are shown to be ideally suited for the creation of highly efficient frequency-tunable sources of short pulses in the visible range. We use unamplified 35-fs pulses of 820-nm Ti: sapphire laser radiation to demonstrate efficient generation of an intense anti-Stokes signal in an elliptical-core fused silica microstructure fiber. The central wavelength of this anti-Stokes signal can be switched between 490 and 510 nm by coupling the pump pulses into the fast and slow modes of the microstructure fiber.

The polarization-dependent supercontinuum generation in photonic crystal fibers with high birefringence and two-zero dispersion

“…The output spectrum, which is better than previous studies [11][12][13][14][15][16][17][18] due to the broadening to 2400 nm, is shown in Figure 4. In order to clarify the impact of the half-wave plate loss, we do a simple comparison with and without the half-wave plate.…”

“…Xiong and Wadsworth [13] have generated a flat, polarized and single mode SC spanning 450-1750 nm in a highly birefringent PCF pumped by a 1064 nm microchip laser. Hu et al [14][15][16][17][18] have elaborated the polarizationdependent guide mode and the frequency-tunable anti-Stokes line emission produced in the high birefrindent PCF 35 fs pump pulse polarized along the fast and the slow axes of the fiber core. The above-mentioned polarized SC light sources can provide a better platform for the further development of tunable broadband SC.…”

Enhanced nonlinear effects in photonic crystal fibers

“…Intense blue-shifted lines centered at 490 and 510 nm, respectively, are generated at the output of a birefringent PCF [45,46] when the pump laser pulses of 35 fs at 820 nm are polarized along the fast or slow axis of the fiber core, due to the different GVD properties of the two eigenmodes of the PCF. This is shown in Fig.…”

Erbium-doped photonic crystal fiber laser with 49mW

“…Particularly, with the continuing development of the fabrication [1][2][3] and theoretical analysis of the fundamental characteristics of PCFs, they have drawn great scientific and technological interest in very recent years. It is found that PCFs have many unique properties that differ remarkably from those of conventional fibers, such as single-mode propagation over a wide range of wavelengths [4], high birefringence [5][6][7][8], sensitive structure manageable dispersion properties [9,10], and extra-strong nonlinear effects [11,12]. These unique properties can be achieved by appropriate design the air hole structure and occupied-space ratio between air and silica.…”