Frank is from Dragonlasers at http://www.dragonlasers.com
Since early developments in the 1960's, lasers have gone through a number of transformations using different types of technology. The previous generation of lasers were bulky and fragile gas lasers such as ion lasers. The current generation of lasers are diode pumped solid state lasers or DPSS for short.
Diode-pumped solid-state (DPSS) lasers are solid-state lasers made by pumping a solid gain medium, for example, a ruby or a neodymium-doped YAG crystal, with a laser diode.
The most common DPSS laser in use is the 532 nm wavelength green laser pointer The green light from the green laser pointer is generated by a process called frequency doubling. The beam typically originates as a 808nm beam from an infrared A1GaAs laser diode. This beam then pumps a crystal made of neodymium-doped vanadate or Nd:YAG to produce a deeper infrared beam with a wavelength of 1064nm.
The last part of the process is passing the 1064nm beam into a KTP (potassium titanyl phosphate) crystal which acts as a frequency doubler and halves the wavelength of the beam to green 532nm laser beam.
The Viper laser pointer, the Hulk portable laser and the other lasers from Dragonlasers are DPSS lasers and use the same principle of pumping a crystal with a laser diode to produce a laser beam.
Advantages of DPSS lasers
DPSS lasers have a number of important over the older gas lasers
They are solid state with no fragile gas filled tube which requires the gas pressure to be maintained correctly for optimal performance.
· Durability: DPSS lasers are more rugged than the typical gas lasers that use a gas filled tube with precise pressure requirements.
· Resonators: DPSS lasers not require the complex resonator structures found in gas lasers.
· Optics: The optics in DPSS lasers are much smaller than the optics in gas lasers. This allows the optics of DPSS lasers to be adjusted in the factory, an adjustment that will normally last the life of the laser. The optics in gas lasers on the other hand need adjustment prior to each use.
· Size: DPSS lasers are much more compact that gas lasers.
· Efficiency: A typical gas laser will output about 2-3% of its electrical input as light. The other 97-98% electrical input will be lost as heat. One reason why gas lasers typically need water cooling. DPSS lasers are much more efficient and output 25-30% of their electrical input as light.
Article is courtesy of Dragonlasers - No 1 lasers, laser pointer and green laser online store
- Related Videos
- Related Articles
- Ask / Related Q&A
- 3g Orange Mobile Phone- Best Technology Comes With Handy Sets
- Orange County and Microsoft Technology Voucher Program
- Mobile Phone Business Orange – Communication on the Role
- Orange Mobile Phone Handsets: Enriched With Tech-rich Gadgets
- Orange Mobile Phones: Offers High-end Mobile Phone Collection
- Orange Mobile Phone Services: Future Brought Today
- Mobile Orange Phone Samsung Z400 – Technology Works on
- Motorola V3 Orange – Communication Clubbed With Fun and Entertainment




Time Inc. Unveils Tablet Magazine Concept
By: Kris Andrews | 07/12/2009The popularity of the Internet has been hurting the print products, including magazines. Their websites, no matter how popular, can only generate a fraction of ad revenue compared to how much publication companies earn on print. Time Inc, publisher of various magazines including Time, People, and InStyle, come up with a series of digital magazines that will be formally unveiled soon.
Useful Barcode Scanner Reviews
By: Peter Hanson | 06/12/2009Since technology is more advanced, it's started to be imperative for the producers and the wholesale merchants of a product to track the line of their goods. The premium way for them to achieve this is to keep data in computers.
The proper way to use a stun gun
By: Chuck Dougherty | 04/12/2009In order to learn the proper way to use a stun gun you need at least some idea of what it is and how it works. In the most basic of terms, a stun gun uses high voltage and low amperage to temporarily disable your attacker and provide you with what hopefully will be enough time to escape.
The Best of Industrial Valves & Pressure Gauges 101
By: Ronald Yiu | 04/12/2009Valves are an integral part of the day-to-day functions- plumbing valves used in taps for hot and cold water, gas control valves on cookers and barbecues, small valves fitted to washing machines and dishwashers, and safety devices fitted to hot water systems.
The Best of Industrial Valves & Pressure Gauges 101
By: Ronald Yiu | 04/12/2009Valves are an integral part of the day-to-day functions- plumbing valves used in taps for hot and cold water, gas control valves on cookers and barbecues, small valves fitted to washing machines and dishwashers, and safety devices fitted to hot water systems.
The Best of Industrial Valves & Pressure Gauges 101
By: Ronald Yiu | 04/12/2009Valves are an integral part of the day-to-day functions- plumbing valves used in taps for hot and cold water, gas control valves on cookers and barbecues, small valves fitted to washing machines and dishwashers, and safety devices fitted to hot water systems.
The Best of Industrial Valves & Pressure Gauges 101
By: Ronald Yiu | 04/12/2009Valves are an integral part of the day-to-day functions- plumbing valves used in taps for hot and cold water, gas control valves on cookers and barbecues, small valves fitted to washing machines and dishwashers, and safety devices fitted to hot water systems.
The Best of Industrial Valves & Pressure Gauges 101
By: Ronald Yiu | 04/12/2009Valves are an integral part of the day-to-day functions- plumbing valves used in taps for hot and cold water, gas control valves on cookers and barbecues, small valves fitted to washing machines and dishwashers, and safety devices fitted to hot water systems.
Laser Safety Glasses or Goggles- a Must Have Eye Protection for Laser Ussers
By: Frank | 21/08/2008 | ElectronicsHigh power lasers are dangerous because they can burn your retina and cause permanent blindness in less than a second so laser safety glasses are an essential accessory. Using laser safety glasses though is not simple and there are limitations.
Fact & Fiction of Green Laser Pointers and Aircraft
By: Frank | 17/03/2008 | Computer GamesFacts and information that will clear many common misconceptions people have about lasers and aircraft
Why Blue Laser Pointers are Much More Expensive Than Green Laser Pointers
By: Frank | 10/03/2008 | Gadgets & GizmosBlue lasers are much more expensive than green lasers. This article explains why there is such a big price difference between the two different colored lasers.
Lens Cleaning for Laser Pointers - Tips and Instructions
By: Frank | 25/02/2008 | Gadgets & GizmosDirty lens are the most common problem for laser pointers and hand held lasers. Using the right equipment and methods, dirty lens are very fast and easy to clean.
Astronomy, Stargazingand Green Laser Pointers
By: Frank | 25/02/2008 | Gadgets & GizmosExplaining which star you are looking at to some one can be difficult and frustrating. Green laser pointers make this easy and they are ideal astronomy aids.
Evolution of Dpss Lasers From Gas Lasers
By: Frank | 09/02/2008 | Gadgets & GizmosThe current DPSS generation of lasers evolved from gas lasers. DPSS lasers have a number of differences and advantages over gas lasers.
Infrared Lasers - the Applications and Safety Issues
By: Frank | 09/02/2008 | Gadgets & GizmosIR laser pointers with an invisibile beam have safety issues and applications that are very different from normal green laser pointers.
Shoddy Green Laser Pointers - What you Should Expect
By: Frank | 08/02/2008 | Gadgets & GizmosA shoddy laser pointer is a laser pointer that has poor performance and inferior quality. There are numerous ways that shoddy laser pointers are passed off as high quality laser pointers.