Single Frequency Lasers & Low Noise Lasers

Single Frequency Lasers & Low Noise Lasers

Single Frequency Laser Technology

Single frequency lasers, also known as single wavelength lasers, operate in a single resonator wavelength mode. With this single longitudinal mode operation, these lasers emit almost monochromatic beams due to the narrow linewidth and low phase noise, providing long coherence lengths. Laser 2000 has a wide variety of single frequency lasers, for wavelengths across the IR, visible and UV spectrum.

Within the Laser 2000 low noise and single frequency laser range are DPSS lasers based on proprietary, alignment–free monolithic resonators. These single longitudinal mode laser models have coherence lengths greater than 10m. The monolithic resonator guarantees the long coherence length, narrow spectral linewidth, frequency stability and Mode hop free operation. Laser crystals used include Nd:YAG, Nd:YVO4, Nd:YLF; and Yb:YAG to achieve fundamental frequencies in the infrared and with harmonics in the red, green, blue and UV.

Examples of applications that have stringent spectral requirements, needing single frequency lasers, include Raman spectroscopy, interferometry, metrology, holography, fluorescence, semiconductor inspection, remote sensing and Laser Doppler velocimetry.

Low Noise Laser Technology

Low noise is an advantage in laser applications where accurate, precise measurements or movements are needed. Where laser images are taken on a fast time scale, a steady reference is required. Consequently, images need to be based on the same output power. Laser 2000 provides a range of low noise lasers, both single mode and multi-mode, CW and pulsed.

The monolithic cavity DPSS low noise lasers offered by Laser 2000 guarantee a low noise, mode hop free and therefore stable operation. Noise on these laser models is less than 0.2% rms.

Applications in which low noise gives an advantage include confocal microscopy, TIRF, flow cytometry, cell sorting, granulometry, photo-manipulation, photo-stimulation, uncaging, fluorescence, autofluorescence and luminescence excitation, Rayleigh and Mie scattering.

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Product Code
Info Data-
sheet
Description
Centre Wavelength
Output Power, Average
Temporal Mode
Package
Cavity Type
Peak Output Power
Pulse Repetition Frequency
Pulse Width
Tuning Wavelength Range
Longitudinal Mode
Linewidth
Transverse (Spatial) Mode
Beam Shape
Beam Dimensions
Beam Divergence
Amplitude Stability, %
M-squared
Noise, %
Polarisation Ratio
Modulation
HeAg30-224SL Show Details 224.3nm, single longitudinal mode, pulsed gas laser delivering 0.01 mW of average output power in a benchtop format. 224.3 nm 0.01 mW Gas Laser Pulsed Benchtop 10 mW 1–5 Hz 20–120 µs Fixed Single 3 GHz TEM00 3 mm 4 mrad Available
HeAg70-224SL Show Details 224.3nm, single longitudinal mode, pulsed gas laser delivering 0.07 mW of average output power in a benchtop format. 224.3 nm 0.07 mW Gas Laser Pulsed Benchtop 50 mW 1–20 Hz 20–120 µs Fixed Single 3 GHz TEM00 3 mm 4 mrad Available
NeCu30-248SL Show Details 248.6nm, single longitudinal mode, pulsed gas laser delivering 0.03 mW of average output power in a benchtop format. 248.6 nm 0.03 mW Gas Laser Pulsed Benchtop 50 mW 1–5 Hz 20–80 µs Fixed Single 2 GHz TEM00 3 mm 4 mrad Available
NeCu70-248SL Show Details 248.6nm, single longitudinal mode, pulsed gas laser delivering 0.25 mW of average output power in a benchtop format. 248.6 nm 0.25 mW Gas Laser Pulsed Benchtop 250 mW 1–20 Hz 20–80 µs Fixed Single 2 GHz TEM00 3 mm 4 mrad Available
FQCW266-10 Show Details 266nm, single longitudinal mode, CW DPSS laser delivering 10 mW of average output power in a benchtop format. 266 nm 10 mW DPSS Laser CW Benchtop Fixed Single 300 kHz TEM00 Circular 0.55 mm 0.8 mrad 1 % 1.3  0.5 % 100-1 Not Available
FQCW266-50 Show Details 266nm, single longitudinal mode, CW DPSS laser delivering 50 mW of average output power in a benchtop format. 266 nm 50 mW DPSS Laser CW Benchtop Fixed Single 300 kHz TEM00 Circular 0.55 mm 0.8 mrad 1 % 1.3  0.5 % 100-1 Not Available
FQCW266-100 Show Details 266nm, single longitudinal mode, CW DPSS laser delivering 100 mW of average output power in a benchtop format. 266 nm 100 mW DPSS Laser CW Benchtop Fixed Single 300 kHz TEM00 Circular 0.55 mm 0.8 mrad 1 % 1.3  0.5 % 100-1 Not Available
FQCW266-200 Show Details 266nm, single longitudinal mode, CW DPSS laser delivering 200 mW of average output power in a benchtop format. 266 nm 200 mW DPSS Laser CW Benchtop Fixed Single 300 kHz TEM00 Circular 0.55 mm 0.8 mrad 1 % 1.3  0.5 % 100-1 Not Available
TEC-100-0375-05 Show Details 375nm, single longitudinal mode, CW external cavity tunable diode laser delivering 5 mW of average output power in a benchtop format. 375 nm 5 mW External Cavity Tunable Diode Laser CW Benchtop Littrow 372–378 nm Single 1 MHz TEM00 Elliptical 1.5  Available
STRADUS-375-60 Show Details 375nm CW laser diode module delivering 60mW of average output power in a benchtop/compact OEM format. 375 nm 60 mW Laser Diode Module CW Benchtop
Compact OEM
Fabry-Perot (FP) Fixed TEM00 Circular 1.3 mm 0.5 mrad 0.5 % 1.25  0.1 % 100-1 Available

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