Laser Focus World is a monthly magazine published by PennWell Corporation covering laser, photonics and optoelectronics technologies, applications, and markets. Many professionals in those fields receive it free of charge; it is also possible to subscribe.Approximately 70,000 subscribers have access to an annual "Lasers and Photonics Marketplace Seminar" and "The Photon Forum" and can track daily photonics news at the magazine's website. There is also an annual buyer's guide.