Abstract
The optical activity of an undoped Y 3Al 5O 12 (YAG) crystal is measured in the near infrared at a fixed temperature. The crystal is located inside the bore of a hollow cylindrical magnet of uniform magnetization. By integrating the applied magnetic field along the cylindrical axis of the crystal, the Verdet constant is determined for wavelengths from 1300 nm to 1350 nm as well as at 1064 nm. For the 1300 nm range, the Verdet constant is found to be approximately 1.38rad/Tm while at 1064 nm it is 2.12rad/Tm. From a fit to these measurements, we can extract values for the band gap energy and K-parameter of the crystal. For undoped YAG, we report a band gap value of 8.1eV±0.3eV and a K-parameter of 596rad/Tm±52rad/Tm, consistent with the previous measurements made with visible light.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3997-4000 |
| Number of pages | 4 |
| Journal | Optics Communications |
| Volume | 285 |
| Issue number | 20 |
| DOIs | |
| State | Published - Sep 15 2012 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
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The Verdet constant of undoped Y 3AL 5O 12 in the near infrared. / Stites, R. W.; O'Hara, Kenneth.
In: Optics Communications, Vol. 285, No. 20, 15.09.2012, p. 3997-4000.Research output: Contribution to journal › Article
TY - JOUR
T1 - The Verdet constant of undoped Y 3AL 5O 12 in the near infrared
AU - Stites, R. W.
AU - O'Hara, Kenneth
PY - 2012/9/15
Y1 - 2012/9/15
N2 - The optical activity of an undoped Y 3Al 5O 12 (YAG) crystal is measured in the near infrared at a fixed temperature. The crystal is located inside the bore of a hollow cylindrical magnet of uniform magnetization. By integrating the applied magnetic field along the cylindrical axis of the crystal, the Verdet constant is determined for wavelengths from 1300 nm to 1350 nm as well as at 1064 nm. For the 1300 nm range, the Verdet constant is found to be approximately 1.38rad/Tm while at 1064 nm it is 2.12rad/Tm. From a fit to these measurements, we can extract values for the band gap energy and K-parameter of the crystal. For undoped YAG, we report a band gap value of 8.1eV±0.3eV and a K-parameter of 596rad/Tm±52rad/Tm, consistent with the previous measurements made with visible light.
AB - The optical activity of an undoped Y 3Al 5O 12 (YAG) crystal is measured in the near infrared at a fixed temperature. The crystal is located inside the bore of a hollow cylindrical magnet of uniform magnetization. By integrating the applied magnetic field along the cylindrical axis of the crystal, the Verdet constant is determined for wavelengths from 1300 nm to 1350 nm as well as at 1064 nm. For the 1300 nm range, the Verdet constant is found to be approximately 1.38rad/Tm while at 1064 nm it is 2.12rad/Tm. From a fit to these measurements, we can extract values for the band gap energy and K-parameter of the crystal. For undoped YAG, we report a band gap value of 8.1eV±0.3eV and a K-parameter of 596rad/Tm±52rad/Tm, consistent with the previous measurements made with visible light.
UR - http://www.scopus.com/inward/record.url?scp=84863984181&partnerID=8YFLogxK
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U2 - 10.1016/j.optcom.2012.06.008
DO - 10.1016/j.optcom.2012.06.008
M3 - Article
AN - SCOPUS:84863984181
VL - 285
SP - 3997
EP - 4000
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
IS - 20
ER -