Coherent® Laser Selection Guide

Depending on the application’s performance and cost requirements, each Coherent® laser family provides a different set of advantages. The table below is a price and performance comparison of Coherent OBIS™, BioRay™, and StingRay™ lasers.

Coherent® High Performance OBIS™ Laser Systems are compact, plug-and-play lasers that offer a wide range of wavelengths from the ultraviolet to the near-infrared in a single platform. Coherent® BioRay™ Lasers are cost-effective, diode laser solutions for bioinstrumentation applications including DNA research, new drug development, or fluid evaluation. Coherent® High Performance StingRay™ Laser Diode Modules are ideal for a variety of alignment or machine vision applications.

Laser Family	OBIS™	BioRay™	StingRay™
Spatial Mode	TEM00	TEM00	TEM00
M2	1.1 1.3	<1.5	<1.5
Beam Diameter	0.7 ± 0.25mm	~2.7 x 1.0mm	~2.7 x 1.0mm
Pointing Stability	<5μRad/°C	<10μRad/°C	<10μRad/°C
RMS Noise
20 Hz to 20MHz	<0.05% - <0.25%	<0.5%	<0.5%
20 Hz to 20kHz, Peak to Peak	<0.5% - <1%	<2%	<2%
Long Term Power Stability (8 hours ±3°C)	<2%	<2%	<2%
Price	$$$	$$	$