laser and diodes
epitaxially grown quantum dot lasers
Optical engines and components developer VI Systems (VIS) has introduced a universal epitaxial growth technique for high-density InAs-GaAs-based quantum dots (QDs) applicable to QD lasers and other advanced devices. 1,300nm QD lasers are known to reach very high transmission speeds of up to 25Gbit/s with very low power consumption, and also demonstrate a low linewidth enhancement
regenerative ultrafast amplifier
Newport’s Spectra-Physics division has introduced the Spitfire Ace, a regenerative ultrafast amplifier providing long-term performance. The Spitfire Ace delivers average power of more than 5W at 1, 5, and 10kHz repetition rates with excellent beam quality (M2 ‹1.3). The highly stable ultrafast amplifier is suitable for pumping multiple optical parametric amplifier systems (OPAs) and in a wide range of ultrafast nonlinear spectroscopy applications. Building upon the highly
successful Spitfire platform, the Spitfire Ace system is equipped
factor. The devices may be suitable for applications from fibre-to-the- home communication networks to frequency conversion, mode-locking and microwave generation. The company says that a unique
technology allows the realisation of threshold current density of approximately 4A/cm2
per QD layer
in multi-stack QD lasers in broad area and narrow stripe devices. Wafers based on foundry-based epitaxial growth are offered.
www.v-i-systems.com
with the company’s innovative XPert technology, ensuring maximum stability with reliable performance over hundreds of hours. The Spitfire Ace is designed for use with the company’s field- proven Mai Tai seed laser and Empower pump laser platforms. The new Empower 45 pump laser delivers more than 45W of average power at a 5kHz repetition rate and is equipped with the company’s noise reduction technology making it the quietest amplifier pump laser on the market. The Spitfire Ace performs optimally when seeded with the field-proven Mai Tai SP oscillator.
www.newport.com
Fibre optics single-mode yb fibre
NKT Photonics has introduced its DC-200/40-PZ-Yb-03, a single- mode, polarising double-clad ytterbium-doped fibre with a large mode area and the company’s Coil Control feature. The flexible ytterbium fibres features a mode area of more than 650μm2
while
maintaining single-mode beam quality. Moreover, the polarising fibre results in improved PER compared to normal polarisation- maintaining fibres. The multi-mode pump light is
guided by the company’s ‘airclad’ technology, ensuring low loss, high damage threshold and a large
numerical aperture (NA). The large NA relaxes tolerances on coupling optics and facilitates the use of lower brightness diodes. The robust single-mode guidance, excellent PER and a large mode area mean that the DC-200/40-PZ-Yb-03 is an attractive choice for high end industrial fibre laser manufactures. The fibre is available with sealed ends or with end-caps and high power SMA connectors in the company’s aeroGain
Flex range. NKT’s Coil Control feature ensurers that the fibre always coils in the correct plane, leading to superior mode stability and easy use.
www.nktphotonics.com
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