Thermo-optical properties of Alexandrite laser crystal

Pavel Loiko; Shirin Ghanbari; Vladimir Matrosov; Konstantin Yumashev; Arkady Major

doi:10.1117/12.2289071

15 February 2018 Thermo-optical properties of Alexandrite laser crystal

Pavel Loiko, Shirin Ghanbari, Vladimir Matrosov, Konstantin Yumashev, Arkady Major

Proceedings Volume 10511, Solid State Lasers XXVII: Technology and Devices; 105111U (2018) https://doi.org/10.1117/12.2289071
Event: SPIE LASE, 2018, San Francisco, California, United States

Abstract

Alexandrite is a well-known material for broadly tunable and power-scalable near-IR lasers. We measured the thermal coefficients of the optical path (TCOP) and thermo-optic coefficients (TOCs) of Alexandrite at 632.8 nm for three principal light polarizations, E || a, E || b and E || c. All TOCs are positive and show a notable polarization-anisotropy, dn_a/dT = 5.5, dn_b/dT = 7.0 and dn_c/dT = 14.9×10^-6 K^-1. We also characterized thermal lensing in a continuous-wave Alexandrite laser which used a Brewster-oriented c-cut 0.16 at.% Cr³⁺ doped BeAl₂O₄ crystal pumped at 532 nm and emitted at 750.9 nm (E || b). The measured thermal lens was positive and astigmatic. The sensitivity factors of the thermal lens (M_x,y = dD_x,y/dP_abs) were found to be M_x = 1.74 and M_y = 2.38 [m^{^-1}/W].

Conference Presentation

Citation Download Citation

Pavel Loiko, Shirin Ghanbari, Vladimir Matrosov, Konstantin Yumashev, and Arkady Major "Thermo-optical properties of Alexandrite laser crystal", Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105111U (15 February 2018); https://doi.org/10.1117/12.2289071

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available