technOlOgy prOducts lasers and diodes Opsl series
Coherent has introduced its Sapphire 552 LP – a series of solid-state optically pumped semiconductor lasers (OPSLs) with output at 552nm. The lasers offer continuous wave (CW) output of 50, 75, 100, 150, and 200mW, making them particularly useful for applications in life sciences. The lasers provide a high quality, diffraction-limited beam (TeM00, M2
‹1.1) with green laser for biophotonics
Bruno Laser has introduced its GSS laser, a green source suitable for biophotonic applications such as optical tweezing, where high pointing stability and beam quality (M2
‹1.1) are advantageous. The 532nm source
offers excellent intensity stability over the entire operation range using integrated thermal management components. The unit offers fully variable power output from threshold to a maximum of 100mW, which reduces the need for optical filtration. Power output is indicated to a resolution of 10mW using an LCD display integrated into the top panel. The GSS draws less than 5.5W under full operation in typical environments, and is air-cooled with a robust CnC machined aluminium body.
www.brunolaser.com
Fibre-coupled diode laser with wavelength stabilisation
Laser Operations has introduced a new high power fibre-coupled diode laser as part of its QPC Lasers product line. The 1908nm diode modules offer output power of up to 40W CW, and the company’s on-chip Brightlock wavelength stabilisation makes the lasers well suited to industrial, medical and defence applications. According to the company, the Brightlock
laser modules at 1908nm offer excellent spectral characteristics and high wall-plug efficiency, targeting a specific laser crystal and water peak absorption to enable multiple applications, including resonant pumping of Ho:Yag, mid-IR generation, direct diode plastic welding and laser therapeutics. Based on the reliable InP material and
the company’s Brightlock on-chip grating technology, the lasers reach 25 per cent peak efficiency at room temperature with less than 2nm linewidth and low wavelength sensitivity to temperature (0.2nm/ºC). The high power diode lasers are available in
fibre-coupled modules, with options including integrated aiming beam, fibre sensors, and photodiode options.
www.qpclasers.com
28 electrO Optics l june 2011 Multi-chip red laser modules
Modulight has added multi-chip red laser modules for industrial, display and medical applications, to its FiberLight product family. The released products fill the gap between the butterfly packaged single emitters and fibre-coupled laser arrays already represented in FiberLight family. The laser modules
can host up to four laser diodes, which are coupled to a single 200μm core fibre with nA=0.22 and terminated with a standard SMA-905 connector. A typical configuration includes a thermistor and a TeC-element for temperature control and a photodiode for power monitoring.
www.modulight.com
excellent pointing stability (‹5µrad/°C), high power stability (‹2 per cent) and low noise (‹0.25 per cent rms from 20Hz to 2MHz). Sapphire 552 LP lasers come with a compact laser head, measuring 125 x 70 x 34mm, which is identical to all other Sapphire LP lasers, independent of wavelength and power class. As with other Sapphire LP lasers, the new 552nm models are equipped with uSB, RS-232 and analogue interface ports for ease of installation and operation.
Sapphire lasers are based on Coherent’s
OPSL technology featuring wavelength scaling, which allows the lasers to be produced at nearly any visible wavelength. As such, visible laser output is matched to key applications instead of vice versa. Additionally, OPSLs do not suffer from thermal lensing, meaning that the output power of any Sapphire LP can be smoothly adjusted from 10 to 110 per cent of nominal power with no effect on beam quality. Sapphire 552 LP lasers are intended for life
sciences applications including flow cytometry, confocal microscopy, and drug discovery. Because this wavelength is well-separated from established, popular laser wavelengths (e.g. 532nm and 568nm), it is well suited for instrument builders and end users looking to increase the number of fluorophores they can simultaneously detect without crosstalk.
www.coherent.com
www.electrooptics.com
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