Simple laser using magnifying glasses, lenses and a laser pointer

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Discussion Overview

The discussion revolves around the construction of a simple laser using magnifying glasses, lenses, and a laser pointer. Participants explore the feasibility of using a laser pointer for heating applications and the necessary power requirements for such a device.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about building a simple laser and whether a laser pointer can be used or if a laser diode is necessary.
  • Another participant clarifies that a laser pointer is indeed a laser but seeks more specificity regarding the intended project.
  • A participant specifies the goal of creating a low power laser capable of generating heat, not just light.
  • Concerns are raised regarding the power output of legal laser pointers, which are designed to prevent injury, and the need for higher power lasers for heating or cutting applications.
  • A warning is issued about the safety requirements associated with using lasers for potentially dangerous activities, emphasizing that the forum does not provide advice on such matters.

Areas of Agreement / Disagreement

Participants express differing views on the use of a laser pointer for heating applications, with some emphasizing safety and power limitations while others seek clarification on the project goals. The discussion remains unresolved regarding the best approach to achieve the desired outcome.

Contextual Notes

Participants highlight the limitations of using legal laser pointers for heating due to their low power output and the associated safety concerns. There is an acknowledgment of the need for understanding safety requirements when working with higher power lasers.

Aidan39
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Hi guys, sorry new to this, I'm looking to build a simple laser using magnifying glasses, lenses and a laser pointer. How would I go about it and can I get away with using the pointer or do I need a laser diode?
 
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A laser pointer IS a laser. So it is not clear what you are you trying to build. Could you be more specific.
(I assume you are not going to use the pointer as a pump-laser)
 
Sorry for being unspecific, I'm trying to make a low power laser capable of creating heat on an object not just light
 
Aidan39 said:
I'm trying to make a low power laser capable of creating heat on an object not just light

The reason that legal laser pointers have low power output is so they can't "create heat" and cause injury to people.

If you want to use a laser for heating or cutting, you need a higher power laser, and YOU ALSO NEED TO UNDERSTAND THE SAFETY REQUIREMENTS OF WHAT YOU ARE DOING. This forum won't give you any advice on potentially dangerous activities, except for "don't do it".
 

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