Lasers - Revision history

Cmditradmin: /* Emission and absorption of radiation */

2010-08-10T22:51:38Z

Emission and absorption of radiation

← Older revision		Revision as of 15:51, 10 August 2010
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	See [[Wikipedia:Laser]]		See [[Wikipedia:Laser]]

	See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) {{Doi\|~~10.1038/187493a0~~ 10.1038/187493a0}}</ref>		See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) {{Doi\|10.1038/187493a0}}</ref>

	See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]		See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]

Cmditradmin at 22:50, 10 August 2010

2010-08-10T22:50:39Z

← Older revision		Revision as of 15:50, 10 August 2010
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	See [[Wikipedia:Laser]]		See [[Wikipedia:Laser]]

	See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) ~~DOI: [http://dx.doi.org/~~10.1038/187493a0 10.1038/187493a0]</ref>		See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) {{Doi\|10.1038/187493a0 10.1038/187493a0}}</ref>

	See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]		See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]

Cmditradmin: /* Transverse modes */

2010-07-20T22:16:21Z

Transverse modes

← Older revision		Revision as of 15:16, 20 July 2010
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	=== Transverse modes ===		=== Transverse modes ===
	[[Image:~~Laser_transverse~~.png\|thumb\|300px\|]]		[[Image:TEMmn.png\|thumb\|300px\|]]
	Up to this point we have been discussing only the axial or longitudinal axis in which waves travel along a line joining the centers of the mirrors. For any real laser cavity there will be waves travelling just off the axis that are able to replicate themselves after covering a closed path. It is possible to have beams that are reflected at different angles. These transverse electromagnetic fields also give rise to resonant transverse electromagnetic modes (TEM) but the because they have components of their electromagnetic field that is transverse to the direction of propagation. The TEM subscripts indicate the number of modes along the x and y axis and you can see these patterns from lasers producing these modes.		Up to this point we have been discussing only the axial or longitudinal axis in which waves travel along a line joining the centers of the mirrors. For any real laser cavity there will be waves travelling just off the axis that are able to replicate themselves after covering a closed path. It is possible to have beams that are reflected at different angles. These transverse electromagnetic fields also give rise to resonant transverse electromagnetic modes (TEM) but the because they have components of their electromagnetic field that is transverse to the direction of propagation. The TEM subscripts indicate the number of modes along the x and y axis and you can see these patterns from lasers producing these modes.

Cmditradmin: /* Emission and absorption of radiation */

2010-06-23T16:23:01Z

Emission and absorption of radiation

← Older revision		Revision as of 09:23, 23 June 2010
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	Laser is light amplification via stimulated emission of radiation. Stimulated emission is key to the ability of the process to amplify light. Mainman was the first person to develop the first visible laser using a ruby.		Laser is light amplification via stimulated emission of radiation. Stimulated emission is key to the ability of the process to amplify light. Mainman was the first person to develop the first visible laser using a ruby.

	See [[~~wikipedia~~:Laser]]		See [[Wikipedia:Laser]]

	See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) DOI: [http://dx.doi.org/10.1038/187493a0 10.1038/187493a0]</ref>		See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) DOI: [http://dx.doi.org/10.1038/187493a0 10.1038/187493a0]</ref>

Cmditradmin: /* Emission and absorption of radiation */

2010-06-23T16:22:46Z

Emission and absorption of radiation

← Older revision		Revision as of 09:22, 23 June 2010
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	Laser is light amplification via stimulated emission of radiation. Stimulated emission is key to the ability of the process to amplify light. Mainman was the first person to develop the first visible laser using a ruby.		Laser is light amplification via stimulated emission of radiation. Stimulated emission is key to the ability of the process to amplify light. Mainman was the first person to develop the first visible laser using a ruby.

	See ~~Wikipedia on Lasers http~~:~~//en.wikipedia.org/wiki/~~Laser		See [[wikipedia:Laser]]

	See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) DOI: [http://dx.doi.org/10.1038/187493a0 10.1038/187493a0]</ref>		See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) DOI: [http://dx.doi.org/10.1038/187493a0 10.1038/187493a0]</ref>

Cmditradmin: /* Axial Modes */

2010-06-23T16:16:48Z

Axial Modes

← Older revision		Revision as of 09:16, 23 June 2010
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	There are many values of for p that will satisfy this equation.		There are many values of for p that will satisfy this equation.

	[[Image:~~400px-~~Longitudinal_mode_v2.svg~~.png~~\|thumb\|300px\|Modes of oscillation for p = 1 to p = 6]]		[[Image:Longitudinal_mode_v2.svg\|thumb\|300px\|Modes of oscillation for p = 1 to p = 6]]

Cmditradmin at 19:54, 29 December 2009

2009-12-29T19:54:39Z

← Older revision		Revision as of 12:54, 29 December 2009
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	<references/>		<references/>
	[[category:Photonics ~~Applications~~]]		[[category:Photonics applications]]
	[[category:Research equipment]]		[[category:Research equipment]]
	<br clear='all'>		<br clear='all'>

Cmditradmin at 19:18, 29 December 2009

2009-12-29T19:18:37Z

← Older revision		Revision as of 12:18, 29 December 2009
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	<references/>		<references/>
			[[category:Photonics Applications]]
			[[category:Research equipment]]
	<br clear='all'>		<br clear='all'>
	<table id="toc" style="width: 100%">		<table id="toc" style="width: 100%">

Cmditradmin at 18:51, 10 September 2009

2009-09-10T18:51:12Z

← Older revision		Revision as of 11:51, 10 September 2009
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	</tr>		</tr>
	</table>		</table>
	== ~~Lasers~~ ==		Lasers are a fundamental tool use in non linear optical research. The laser is both a research tool and a product of research. The evolution of tunable and high speed pulsed lasers has made it possible to study new phenomena and has created new technology with huge economic importance.



			== Emission and absorption of radiation ==

	Laser is light amplification via stimulated emission of radiation. Stimulated emission is key to the ability of the process to amplify light. Mainman was the first person to develop the first visible laser using a ruby.		Laser is light amplification via stimulated emission of radiation. Stimulated emission is key to the ability of the process to amplify light. Mainman was the first person to develop the first visible laser using a ruby.
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	See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]		See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]

	~~== Emission and absorption of radiation ==~~


	=== Two state system ===		=== Two state system ===

Nsylvain: /* Lasers */

2009-08-27T00:48:40Z

Lasers

← Older revision		Revision as of 17:48, 26 August 2009
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	See Wikipedia on Lasers http://en.wikipedia.org/wiki/Laser		See Wikipedia on Lasers http://en.wikipedia.org/wiki/Laser

	See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960)</ref>		See Mainman 1960 <ref>T.H. Mainman, Nature 187, 493 (1960) DOI: [http://dx.doi.org/10.1038/187493a0 10.1038/187493a0]</ref>

	See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]		See Cord Course on Lasers [http://cord.org/cm/leot1.htm Lasers]