Yb^3+:YAG silica fiber laser

Abstract

We demonstrate a compact, room-temperature, cw Yb(3+):Y(3)Al(5)O(12) silica (Yb(3+):YAG silica) fiber laser grown by the codrawing laser-heated pedestal growth technique. A slope efficiency of 76.3% was achieved from a 7 mm Yb(3+):YAG silica fiber, corresponding to an extracted power of nearly 1 W/cm. A laser side-mode suppression ratio of 70 dB was obtained with a 3 dB linewidth of 0.15 nm. Additionally, the propagation loss and emission cross section were determined by analyzing the lasing thresholds and slope efficiencies.

Simulation and experiment on laser-heated pedestal growth of chromium-doped yttrium aluminum garnet single-crystal fiber

“…In Eqs. (6) and (7), diffusion in the crystal is neglected. (4) At the air/melt interface of melt zone…”

“…They are recognized for their remarkable characteristics, such as low defect density, long mode confinement length, and good laser efficiency. These advantages enable their applications in passive devices [2,3], active devices [4][5][6][7][8][9][10][11], and nonlinear fiber devices [12][13][14]. For various kinds of high quality crystal fiber devices, the concentration level and distribution of dopants in the melt, especially at the growth front, are necessary to be designed and optimized finely.…”

Algorithm for evaluation of temperature distribution of a vapor cell in a diode-pumped alkali laser system: part I

“…Generally, the collisionally broadened cross sections of both the D 1 and D 2 lines are of the order of 10 −13 cm −2 at 110 °C [12]. Such values are much larger than the cross sections of stimulated radiation for the most conventional solid-state, fiber and gas lasers (e.g., about 10 6 times larger than a Nd:YAG laser) [13][14][15][16]. Thus, DPALs provide an outstanding potentiality for realization of high-powered laser systems.…”

5.4 W cladding-pumped Nd:YAG silica fiber laser

“…Moreover, the limited choices of co-dopants that can be incorporated into the silica matrix restricts the optical properties of RE-doped fibers. Recently, fibers with core material drawn from an Er:YAG or Yb:YAG crystal and silica cladding have been demonstrated [1,2], but to the best of our knowledge no reports on high power lasers are available. Here we present spectroscopy and laser characteristics of a Nd-doped non-silica core and silica cladding fiber, fabricated using a rod-in-tube technique and a Nd:YAG crystal rod as core material.…”