Frequency stabilization of a laser diode by photo-thermic feedback on active layer domain

1993 ◽  
Author(s):  
Seiichi Kakuma
Keyword(s):  
Active Layer ◽  
Laser Diode ◽  
Frequency Stabilization

Degradation Analysis and Degradation Suppression Technology Caused by Light Absorption at Active Layer Facet of GaInAsP Laser Diode

2008 ◽  
Vol 128 (5) ◽  
pp. 732-737
Author(s):  
Hiroyuki Ichikawa ◽  
Masashi Ito ◽  
Chie Fukuda ◽  
Kotaro Hamada ◽  
Akira Yamaguchi ◽  
...  
Keyword(s):  
Active Layer ◽  
Laser Diode ◽  
Light Absorption ◽  
Degradation Analysis

High Speed Transient Temperature Profile Control Using Adjoint-Based Optimal Control Scheme

2011 ◽  
Author(s):  
Satoru Ito ◽  
Yuji Suzuki
Keyword(s):  
Optimal Control ◽  
Temperature Profile ◽  
Active Layer ◽  
Laser Diode ◽  
High Speed ◽  
Transient Temperature ◽  
Control Input ◽  
Control Scheme ◽  
Profile Control ◽  
Optimal Control Scheme

Optimal control scheme for transient temperature profile inside electronic devices such as pulsed laser diode is developed based on the adjoint equation of one-dimensional heat conduction. Joule heating with a thin-film heater is employed as the control input in order to minimize temperature changes of a thin active layer embedded in a modeled laser diode. In numerical simulations assuming the light-emitting time period of 1 μs, temperature variation of the active layer is successfully suppressed by 80% with the heat input prior to the onset of the laser pulse. It is found that the Fourier number of the layer between the control heater and the active layer is the key parameter to minimize the temperature fluctuations. We also successfully demonstrate suppression of the temperature change in a MEMS-based experimental setup.

Frequency Stabilization of a Laser Diode with Use of Light-Induced Birefringence in an Atomic Vapor

2003 ◽  
Vol 42 (33) ◽  
pp. 6645 ◽  
Author(s):  
Yutaka Yoshikawa ◽  
Takeshi Umeki ◽  
Takuro Mukae ◽  
Yoshio Torii ◽  
Takahiro Kuga
Keyword(s):  
Laser Diode ◽  
Frequency Stabilization ◽  
Atomic Vapor
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