Diode-pumped fiber laser

Sum-frequency mixing of two diode pumped fiber lasers (938 and 1583 nm) in a nonlinear crystal. CW format has been demonstrated at low power levels higher powers and pulsed formats are under development. 

Frequency doubled/Raman shifted fiber laser to generate 589 nm. This is a diode pumped, CW format currently under development. 

Linearly polarized, near-diffraction-hmited, mode-locked 1319 and 1064 nm pulse trains are generated in separate dual-head, diode-pumped resonators. Each 2-rod resonator incorporates fiber-coupled diode lasers to end-pump the rods, and features intracavity birefringence compensation. The pulses are stabilized to a 1 GHz bandwidth. Timing jitter is actively controlled to < 150 ps. Models indicate that for the mode-locked pulses, relative timing jitter of 200 ps between the lasers causes <5% reduction in SFG conversion efficiency. 

Fig. 5.5 Experimental setup. The diode laser is frequency scanned by one waveform generator, while the other controls the modulation. The light couples from a tapered fiber into and back out of microsphere WGMs, and the throughput is detected. A polarizing beamsplitter (PBS) separates throughput of the two polarizations. A diode pumped solid state laser can be used as an external heat source for the microsphere, and the vacuum chamber allows control over the ambient pressure. Reprinted from Ref. 5 with permission. 2008 International Society for Optical Engineering...

Li et al. proposed a microfluidic chip into which the one end of an optical fiber was introduced, and the other terminal was coupled to a blue diode-pumped laser... 

One example is diode-pumped g-switched Nd YAG ceramic laser operating at 946 nm [131]. Figure 9.17 shows experimental schematic diagram of the diode-pumped actively g-switched 946-nm Nd YAG ceramic laser. A Nd YAG ceramic sample doped with 0.6 at.% Nd with a dimension of 04 mm x 5 nun was used. When using a fiber-coupled laser diode with the fiber diameter of 600 pm as the... 

Sangla D, Aubry N, Didieijean J, Perrodin D, Balembois F, Lebbou K et al (2009) Diode-pumped laser with Yb YAG single-crystal fiber grown by the micro-pulling down technique. Appl Phys B Lasers Opt 94 203-207... 

Similar to DPSS, diode lasers pump most practical fiber lasers. In a fiber laser, a usually rare-earth doped fiber forms at the same time the gain region and (part of) the cavity. Since the fiber can readily be spliced, different types of fibers can be put together to form a monolithic light source. The primary wavelength of these lasers... 

In 1987, another important step was the laser diode pumping Reekie et al. (1987) expected to pave the way for inline amplification at 1.5 pm, which was later demonstrated to be true. That same year they obtained the first fiber amplifier at 1.5 pm (Mears et al. 1987) (fig. 40), giving a gain of 28 dB for a length of 3 m, with an amplification bandwidth of more than 4THz (30 nm). 

V. Karpov, E.M. Dianov, V.M. Paramonov, O.I. Medvedkov Laser-diode pumped phospho-silicate-fiber Raman laser with an output of 1 W at 1.48 pm. Opt. Lett. 24, 1 (1999)... 

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