James A. Piper

Compact Continuous-Wave Yellow Laser Based on a Self-Stimulating Raman Nd:YVO 4 Laser

We report 92mW CW yellow output from a small-scale, diode-pumped intracavity-doubled self-stimulating Raman Nd:YVO4 laser with optical efficiency of 2.2%. We believe this to be the first report of a CW self-stimulating Raman yellow laser.

Pulsed Laser Pump Wavelength Influence on the Efficiency and Stability of the Alexandrite Laser

Pulsed laser pumping was investigated for a range of monochromatic wavelengths from 532nm to 671nm. Shortening pump wavelength was associated with increased non-radiative energy decay, reduced efficiency and chaotic spectral, temporal and transverse modal characteristics

A highly astigmatic diode end-pumped solid-state laser

A simple linear highly astigmatic laser cavity design has been analysed theoretically and demonstrated experimentally with Nd:YVO4. This cavity design is appropriate for high-power diode-laser-array end-pumping. The cavities presented are capable of generating Gaussian beams with general astigmatism, which have principal axes which rotate on propagation.

Design and operation of all-solid-state, 320 mW continuous-wave yellow laser

Continuous-wave powers up to 320mW at 588 nm and quasi-cw powers up to 700mW are reported from diode-pumped Nd:GdVO4 laser with intracavity Raman-shifting (KGW) and intracavity frequency-doubling (LBO) are reported, with efficiency up to 3.2%.

High-Efficiency Raman Converter Generating 1.5W of Red-Orange Output

We report record Stokes conversion efficiency and output power for a nanosecond pumped Raman laser. Using KGd(WO4)2 in an external cavity Raman laser configuration, we obtained 64% conversion efficiency of a 2.3W 532nm pump laser.

Efficient diode-pumped yellow, orange and red laser sources based on stimulated Raman scattering in KGd(WO 4 ) 2

Efficient intracavity and external-cavity KGd(WO4)2 Raman lasers are reported. For an intracavity Raman laser with intracavity frequency-doubling, we obtained 1.7 W at 579 nm and 0.84 W at 588 nm. Using an external-cavity Raman resonator pumped by a 1 W 532 nm laser, we obtained output at more than 8 wavelengths in the range 555 nm to 658 nm with output powers as high as 0.4 W at slope efficiencies up to 68%.

Widely tunable green lasers based on the self-frequency doubling material Yb:YAB

We report widely tunable infrared (70nm) and self-frequency-doubled operation, (with 25-450mW output power), in Yb:YAB, covering the wavelengths of the copper vapor laser (510nm), Argon ion (514nm), doubled Nd:YAG (532nm) and green HeNe (543nm).

Spectral characterization andLaser operation of Er 3+ :Yb 3+ :YCOB crystals at 1.5a1.6 Pm

2 at.% Er and 20 at.% Yb crystalline co-doped Er:Yb:YCOB has been grown and characterized. Polarized absorption spectra and fluorescence spectra were measured and gain cross sections were calculated. The data show that Er:Yb:YCOB is a promising material for laser emission in the favorable wavelength range of 1546-1570nm for practical applications. Laser emission at 1554nm has been obtained for the first time, using a 976nm diode pump source.

Growth and Characterization of Laser Nonlinear-Optical Crystal Yb3+:YAl3(BO3)4

A novel nonlinear-optical laser crystal, Yb3+:YAl3(BO3)4, has been grown with good optical quality by the method of high temperature flux. Room and low temperature absorption and fluorescence spectra have been measured and spectral parameters have been calculated. The ground-state energy-level splitting is 581cm−1. The emission lifetime is 0.68ms and the peak emission cross section is over 1.0×l0−20cm2. The data show that this crystal has potential as an efficient self-doubled laser operating in the green.

CW crystalline Raman lasers : multi-watt and multi-wavelength operation in the visible

We report the generation of high power, continuous-wave yellow emission from a frequency-doubled, self-Raman laser. Output power of 2.25 W at 586.5 nm is achieved with a diode to yellow conversion efficiency of 13.2%.