Gases that absorb IR radiation

In summary, the conversation discusses the search for a gas that can absorb Nd:YAG laser radiation at 1064 nm in order to heat a glass fiber composite. Water vapor is suggested as a potential option, but the person asking the question clarifies that it needs to be a gas. The current method of using a superheated nitrogen torch is mentioned, but it is noted that water vapor may still be a better option due to its ability to absorb IR light at 1064 nm.
  • #1
Eric Markiewicz
4
0
Hello,

I'm looking for a gas (hopefully one that is readily available) that will absorb Nd:YAG laser radiation at 1064 nm. The purpose is to heat the gas to transmit heat into a glass fiber composite which normally does not absorb IR light.
 
Science news on Phys.org
  • #3
Does it have to be a gas? Water vapour is not a bad approach if it does have to be a gas.
 
  • #4
Yes, it needs to be a gas. Our laser is 2kW, and we've tried other absorbents. We currently use a superheated nitrogen torch.
 
  • #5
Water vapor doesn't seem to absorb much IR at 1064nm
 
  • #6
Still more than (most?) other common gases. A solid or liquid would give more absorption...
 

FAQ: Gases that absorb IR radiation

1. What are gases that absorb IR radiation?

Gases that absorb IR radiation are molecules that have the ability to absorb infrared (IR) radiation. These molecules have bonds that can vibrate at certain frequencies and absorb the energy of IR radiation, leading to an increase in their internal energy.

2. How do gases absorb IR radiation?

Gases absorb IR radiation through a process called greenhouse effect. When IR radiation from the sun reaches the Earth's atmosphere, some of it is absorbed by the gases present in the atmosphere. This absorbed energy is then re-emitted in all directions, including back towards the Earth's surface, causing an increase in temperature.

3. What are the most common gases that absorb IR radiation?

The most common gases that absorb IR radiation are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. These gases are known as greenhouse gases and play a crucial role in regulating the Earth's temperature.

4. Why is it important to study gases that absorb IR radiation?

Studying gases that absorb IR radiation is important because they have a significant impact on the Earth's climate. The increasing levels of these gases in the atmosphere can lead to the greenhouse effect becoming stronger, resulting in global warming and other climate change effects.

5. How can we reduce the amount of gases that absorb IR radiation in the atmosphere?

We can reduce the amount of gases that absorb IR radiation in the atmosphere by limiting our use of fossil fuels, which are the main source of these gases. We can also promote the use of renewable energy sources and implement sustainable practices to reduce our carbon footprint and mitigate the effects of climate change.

Similar threads

How does radiation become heat?
Replies
20
Views
10K
What happens to the IR radiation that the Greenhouse gases don't absorb?
Replies
8
Views
2K
I How is IR ink able to be seen with specialized filters?
Replies
3
Views
2K
Optical DIY Privacy Shades: Make Your Own IR-Blocking Sunglasses
Replies
2
Views
3K
I Gases: Not Required to Be Blackbodies
Replies
19
Views
17K
Correlated-k method (absorption of radiation)
Replies
3
Views
2K
I Confusion about absorption spectra - cool gases absorb?
Replies
17
Views
6K
Gas radiation question - He, H2 vs O2, N2
Replies
9
Views
5K
How a solid body emits a lower frequency photon than absorbed
Replies
4
Views
1K
Clear chemical or material that will absorb or deflect IR?
Replies
4
Views
2K

Hot Threads

Recent Insights

Back
Top