Novel concepts for injection lasers

Nikolai N. Ledentsov; Vitaly A. Shchukin

doi:10.1117/1.1518677

Abstract

Modern trends in the design of semiconductor lasers are addressed. Nanoscale coherent inclusions of a narrower bandgap semiconductor in a wider gap semiconductor matrix, or quantum dots (QDs), are designed as a new type of active medium for injection lasers. QDs provide a possibility to extend the wavelength range of heterostructure lasers on GaAs substrates to 1.3 μm and beyond and improve their device performance. We realize 330-mW cw 1.3-μm single-mode continuous wave edge emitters and 1.2-mW cw vertical-cavity surface-emitting lasers (VCSELs). Long operation lifetimes and other competitive device parameters are demonstrated. Novel device designs are proposed. In one concept, high-order mode filtering in structures with periodically modulated refractive index containing a "defect" enables realization of stable narrow-beam divergence fundamental mode lasing in both edge emitters and VCSELs. In a different novel design, light propagates at some angle with respect to multilayer interference reflectors (MIRs), and the MIRs and the cavity are calculated for the tilted photon incidence. A "tilted cavity" laser (TCL) gives wavelength-stabilized operation in edge and (or) in surface direction and does not require materials having a high refractive index difference. New generations of semiconductor optical amplifiers, photodetectors, optical fibers, etc. may become a reality.

Citation Download Citation

Nikolai N. Ledentsov, Nikolai N. Ledentsov, Vitaly A. Shchukin, Vitaly A. Shchukin, } "Novel concepts for injection lasers," Optical Engineering 41(12), (1 December 2002). https://doi.org/10.1117/1.1518677 . Submission:

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

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

Members: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years